| 
                                            
                                            
                                                France Liabs: Flow: RW: EM: Other Investments (OI) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,069.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Currency & Deposits (CD) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 80,789.849
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: Banknotes & Coins (BC) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 250.000
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: BC: Notes & Coins (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 250.000
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: Transferable Deposits (TD) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -4,260.853
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: TD: Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -5,259.250
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: TD: Foreign Currency Deposits (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 998.397
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: Accrued Interest (AI) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 31.669
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: AI: Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 16.651
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: AI: Foreign Currency Deposits (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 15.017
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: Other Deposits (OD) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 84,769.033
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Investments (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 417.774
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Investments: Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 417.493
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Investments: Foreign Currency (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.281
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Maturity Investments (MI) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,845.998
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: MI: Euros (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,991.138
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: MI: Foreign Currency (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -3,837.137
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Contractual Savings (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5.043
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Refinancing Between Fis (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 92,385.040
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Corresponding Financial Accounts (CF) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 41,545.507
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: CF: Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 41,435.142
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: CF: Foreign Currency  (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 110.364
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: CD: OD: Various Deposits & Bonds (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -47,738.333
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Debt Securities (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 32,661.954
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Debt Securities: Short Term (ST) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 11,362.313
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Debt Securities: Long Term (LT) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 21,299.641
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 13,612.882
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Loans: ST (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 11,173.610
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Loans: LT (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,439.272
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Shares & Mutual Fund Shares (SM) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -6,088.515
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Excluding Mutual Fund Shares (EM) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -5,712.620
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: EM: Listed Shares (LS) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -6,016.700
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: EM: LS: French Companies (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -812.00
            
                                        Sep 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Sep 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: EM: Unlisted Shares (UL) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -3,421.874
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: EM: UL: French Companies (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,426.00
            
                                        Sep 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Sep 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: EM: Other Investments (OI) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,725.954
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: EM: OI: French Companies (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,334.00
            
                                        Sep 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Sep 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Mutual Fund Shares (MF) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -375.895
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: MF: Money Market Funds (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -594.383
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: MF: Securities of Non Money Market Funds (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 218.488
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Insurance Technical Reserves (IR) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 46.561
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: IR: Premiums & Claims Reserves (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 330.000
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: IR: Net Equity of HHs in Life IR & Pension Funds (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -254.484
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: IR: NE: Life Insurance Technical Reserves (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -1,247.00
            
                                        Mar 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 20,170.185
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Other Accounts Receivable & Payable (OP) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 9,356.667
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: OP: Trade Credits & Advances (TC) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,565.708
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: OP: TC: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,565.708
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: OP: TC: ST: Commercial Credits in Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,441.406
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: OP: TC: ST: Commercial Credits in Foreign Currency (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 124.302
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: OP: Other Non Commercial Credit Accounts (ON) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 6,790.959
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: OP: ON: Accounting Discrepancies (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -3,916.00
            
                                        Sep 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Sep 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Asset: Flow: RW: Total Off-Net Financial Worth (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 150,549.583
            
                                        Mar 2018
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Mar 2018
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Monetary Gold & SDRs (MS) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 235.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: MS: Monetary Gold  (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: MS: SDRs (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 235.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Currency & Deposits (CD) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -57,450.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: Banknotes & Coins (BC) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: BC: Currency Notes & Coins (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: Transferable Deposits (TD) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 12,692.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: TD: Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 10,988.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: TD: Foreign Currency Deposits (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,704.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: Accrued Interest (AI) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -80.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: AI: Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -37.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: AI: Foreign Currency Deposits (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -43.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: Other Deposits (OD) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -70,061.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: Maturity Investments (MI) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,409.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: MI: Euros (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,407.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: MI: Foreign Currency (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: Refinancing Between Fis (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -78,872.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: Corresponding Financial Accounts (CF) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 11,369.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: CF: Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5,524.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: CF: Foreign Currency  (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5,845.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: Deposits with International Orgs (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -843.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: CD: OD: Various Deposits & Bonds (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -3,126.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Debt Securities (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -34,050.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Debt Securities: Short Term (ST) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -18,699.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Debt Securities: Long Term (LT) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -15,351.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 19,978.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Loans: ST (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 11,887.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Loans: LT (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 8,466.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Loans: Accrued Interest (AI) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -374.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Loans: AI: Euros (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -140.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Loans: AI: Foreign Currency (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -234.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Shares & Mutual Fund Shares (SM) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -7,333.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Excluding Mutual Fund Shares (EM) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -9,087.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: EM: Listed Shares (LS) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -19,330.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: EM: LS: Foreign Companies (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -2,430.00
            
                                        Sep 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Sep 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: EM: Unlisted Shares (UL) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 8,175.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: EM: UL: Foreign Companies (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 12,418.00
            
                                        Sep 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Sep 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: EM: OI: Foreign Companies (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,635.00
            
                                        Sep 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Sep 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Mutual Fund Shares (MF) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,754.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: MF: Money Market Funds (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -90.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: MF: Securities of Non Money Market Funds (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,844.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -11,379.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: Other Accounts Receivable & Payable (OP) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -8,154.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: OP: Trade Credits & Advances (TC) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,445.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: OP: TC: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,445.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: OP: TC: ST: Commercial Credits in Euro (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,367.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: OP: TC: ST: Commercial Credits in Foreign Currency (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,077.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                France Liabs: Flow: RW: OP: Other Non Commercial Credit Accounts (ON) (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -11,598.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 1996 - Dec 2017
                                     |