| 
                                            
                                            
                                                Greece Financial Liabilities: Flow: Long Term Debt Securities (LT) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 362.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Monetary Gold and SDR (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: CD: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 6,449.16
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: CD: Domestic Residents: Financial Corporations (F... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5,960.42
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Financial Assets: Flow: CD: Domestic Residents: FC: Bank of Greece (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,585.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: CD: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,375.42
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: CD: Domestic Residents: General Government (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 488.74
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: CD: Domestic Residents: General Government: ow Ce... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 488.74
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: CD: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -2,786.32
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Short Term Debt Securities (ST) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -2,483.32
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -2,260.21
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents: Non Financial Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.28
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents: Financial Corporations (F... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -630.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -630.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents: FC: Other Financial Insti... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents: FC: Insurance Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents: General Government (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,630.49
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Domestic Residents: General Government: ow Ce... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,630.49
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: ST: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -223.11
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Long Term Debt Securities (LT) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -8,319.37
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,076.26
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents: Non Financial Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -3.48
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents: Financial Corporations (F... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 821.26
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Financial Assets: Flow: LT: Domestic Residents: FC: Bank of Greece (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 821.78
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents: FC: Other Financial Insti... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -0.52
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents: FC: Insurance Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents: General Government (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 258.48
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Domestic Residents: General Government: ow Ce... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 258.48
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LT: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -9,395.63
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Short Term Loans (SL) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -4,745.19
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -4,597.44
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents: Non Financial Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 116.16
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents: Financial Corporations (F... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -6,998.73
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents: FC: Other Financial Insti... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -124.68
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents: FC: Insurance Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -0.05
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents: General Government (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,690.15
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents: General Government: ow Ce... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,689.07
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Domestic Residents: Households and NPISH (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -405.02
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: SL: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -147.75
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Long Term Loans (LL) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -633.94
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -506.68
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: Non Financial Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 289.85
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: Financial Corporations (F... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 7.79
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Financial Assets: Flow: LL: Domestic Residents: FC: Bank of Greece (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: FC: Other Financial Insti... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 7.81
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: FC: Insurance Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1.02
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: General Government (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 59.65
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: General Government: ow Ce... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 65.89
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Domestic Residents: Households and NPISH (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -863.97
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LL: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -127.26
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Listed Shares (LS) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -206.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LS: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -202.21
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LS: Domestic Residents: Non Financial Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5.48
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LS: Domestic Residents: Financial Corporations (F... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -207.69
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Financial Assets: Flow: LS: Domestic Residents: FC: Bank of Greece (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LS: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -205.45
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LS: Domestic Residents: FC: Other Financial Insti... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -2.15
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LS: Domestic Residents: FC: Insurance Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -0.09
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: LS: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -4.29
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Unlisted Shares and Other Equity (US) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 166.62
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: US: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 74.06
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: US: Domestic Residents: Non Financial Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5.34
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: US: Domestic Residents: Financial Corporations (F... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 68.72
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: US: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -3.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: US: Domestic Residents: FC: Other Financial Insti... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 80.90
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: US: Domestic Residents: FC: Insurance Corporation... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -8.38
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: US: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 92.56
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Investment Fund Shares (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -614.18
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Investment Fund Shares: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -92.44
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Investment Fund Shares: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -521.74
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Assets: Flow: Insurance, Pension and Standardized Guarantees (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -259.98
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 6,449.16
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: Non Financial Corpor... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 604.60
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: Financial Corporatio... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -864.32
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Financial Liabilities: Flow: CD: Domestic Residents: FC: Bank of Greece (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,165.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 331.85
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: FC: Other Financial ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2.33
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: FC: Insurance Corpor... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -33.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: General Government (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,923.24
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: General Government: ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,180.91
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Domestic Residents: Households and NPISH... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,785.64
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: CD: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -16,915.77
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: Short Term Debt Securities (ST) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -609.69
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -2,260.21
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents: Non Financial Corpor... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 50.86
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents: Financial Corporatio... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,311.98
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Financial Liabilities: Flow: ST: Domestic Residents: FC: Bank of Greece (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.28
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,363.86
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents: FC: Other Financial ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -21.52
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents: FC: Insurance Corpor... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 73.12
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents: General Government (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,072.14
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Domestic Residents: Households and NPISH... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 73.05
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: ST: Rest of the World (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,650.52
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: LT: Domestic Residents (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,076.26
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: LT: Domestic Residents: Non Financial Corpor... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -116.31
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: LT: Domestic Residents: Financial Corporatio... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,335.31
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Financial Liabilities: Flow: LT: Domestic Residents: FC: Bank of Greece (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 13.71
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: LT: Domestic Residents: FC: Other MFI (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 939.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Greece Financial Liabilities: Flow: LT: Domestic Residents: FC: Other Financial ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 25.77
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1998 - Dec 2017
                                     |