| 
                                            
                                            
                                                Portugal PT: IIP: Assets: Financial Derivatives & Employee Stock Options: Centra... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 32.38
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Direct Investment: Equity: Direct Investment Ente... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 106.74
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 411,766.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 656,353.01
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Net International Investment Position (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -244,587.01
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Direct Investment (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 103,072.64
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Direct Investment (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 185,734.39
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Direct Investment: Equity (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 69,836.44
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Direct Investment: Equity (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 125,720.22
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Direct Investment: Equity: Direct Investor in Direct I... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 69,463.46
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Direct Investment: Equity: Direct Investor in Dir... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 125,329.25
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Direct Investment: Equity: Direct Investment Enterpris... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 7.20
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Direct Investment: Debt Instruments (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 33,236.20
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Direct Investment: Debt Instruments (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 60,012.97
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Direct Investment: Debt Instruments: Direct Investor i... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 13,083.16
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Direct Investment: Debt Instruments: Direct Inves... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 34,812.08
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Direct Investment: Debt Instruments: Direct Investment... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 12,819.32
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Direct Investment: Debt Instruments: Direct Inves... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 20,692.72
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 166,103.05
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 161,079.18
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Equity (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 43,351.10
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Equity: Deposit Taking Corporati... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5,520.38
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Equity: General Government (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,284.67
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1998 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Equity: Other Sectors (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 35,544.85
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Equity (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 37,978.23
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Equity: Deposit Taking Corp... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,691.01
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Equity: Other Sectors (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 36,287.22
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 122,753.15
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Central Bank (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 42,597.94
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Central Bank: L... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 37,899.08
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Central Bank: S... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,698.86
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Deposit Taking ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 24,099.93
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Deposit Taking ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 19,673.32
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Deposit Taking ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,425.42
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: General Governm... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,211.73
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: General Governm... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,744.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: General Governm... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 466.53
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Other Sectors (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 52,843.56
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Other Sectors: ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 49,950.85
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Portfolio Investment: Debt Securities: Other Sectors: ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,893.91
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 123,100.95
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: Deposit Ta... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 11,611.62
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: Deposit Ta... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 11,602.03
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: Deposit Ta... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 9.59
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1997 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: General Go... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 91,574.95
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: General Go... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 85,397.36
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: General Go... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 6,176.40
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1995 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: Other Sect... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 19,914.38
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: Other Sect... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 19,000.51
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Portfolio Investment: Debt Securities: Other Sect... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 915.07
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1995 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Financial Derivatives & Employee Stock Options (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,026.82
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Financial Derivatives & Employee Stock Options: Deposi... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,301.24
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Financial Derivatives & Employee Stock Options: Genera... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 672.81
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Financial Derivatives & Employee Stock Options: Other ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 21.59
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Financial Derivatives & Employee Stock Options (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,950.49
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1997 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Financial Derivatives & Employee Stock Options: C... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 29.98
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Financial Derivatives & Employee Stock Options: D... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,879.74
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Financial Derivatives & Employee Stock Options: G... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 14.39
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1997 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Financial Derivatives & Employee Stock Options: O... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 26.38
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1998 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 114,452.80
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 305,587.74
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Currency & Deposits (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 85,493.30
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Currency & Deposits: Central Bank (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 50,811.94
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Currency & Deposits: General Governm... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 262.65
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Currency & Deposits: Other Sectors (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 14,748.99
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Currency & Deposits (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 181,972.19
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Currency & Deposits: Central Ba... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 122,923.45
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Currency & Deposits: Other Sect... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        2011 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 14,667.44
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans: Deposit Taking Corporations e... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 9,603.99
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans: Deposit Taking Corporations e... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 7,784.66
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans: Deposit Taking Corporations e... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,819.34
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans: General Government (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,222.52
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans: Other Sectors (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,686.22
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans: Other Sectors: Long Term (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,469.14
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Loans: Other Sectors: Short Term (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 218.27
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1997 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 106,152.44
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: Central Bank (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5,062.25
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: Deposit Taking Corporati... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: Deposit Taking Corporati... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: Deposit Taking Corporati... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: General Government (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 77,528.75
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: Other Sectors (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 23,562.65
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: Other Sectors: Long Term (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 20,160.23
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: Other Sectors: Short Ter... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,402.41
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Loans: General Government: Cred... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 6,662.11
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1999 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Trade Credit & Advances (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,120.79
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Trade Credit & Advances: General Gov... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        2014 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Trade Credit & Advances: General Gov... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        2014 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Trade Credit & Advances: Other Secto... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,120.79
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Trade Credit & Advances: Other Secto... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,120.79
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Trade Credit & Advances (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 15,339.05
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Trade Credit & Advances: Other ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 15,339.05
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Liabilities: Other Investment: Trade Credit & Advances: Other ... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 15,339.05
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Other Accounts Receivable (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,160.16
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Other Accounts Receivable: Central B... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Other Accounts Receivable: Central B... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Other Accounts Receivable: Deposit T... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 921.06
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Other Accounts Receivable: Deposit T... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1998 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Other Accounts Receivable: Deposit T... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 921.06
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1996 - 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Portugal PT: IIP: Assets: Other Investment: Other Accounts Receivable: General G... (USD mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,239.09
            
                                        2017
                                     | 
                                    
                                    
                                    
                                        yearly
                                     | 
                                    
                                        1993 - 2017
                                     |