Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Debt (Export credit facilities) (Details)

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Debt (Export credit facilities) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
aircraft
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 503
Export Credit Facilities [Member]  
Debt Instrument [Line Items]  
Debt instrument, collateral amount | $ $ 3,000,000
Collateral (Number of aircraft) | aircraft 71
Credit facility amount outstanding | $ $ 1,241,262
Export Credit Facilities [Member] | Minimum [Member]  
Debt Instrument [Line Items]  
Debt instrument term 10 years
Export Credit Facilities [Member] | Maximum [Member]  
Debt Instrument [Line Items]  
Debt instrument term 12 years
Export Credit Facilities [Member] | 2003 Airbus ECA Facility [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 11
Floating rate tranches | $ $ 85,961
Export Credit Facilities [Member] | 2003 Airbus ECA Facility [Member] | LIBOR [Member]  
Debt Instrument [Line Items]  
Spread over reference rate 0.43%
Export Credit Facilities [Member] | 2004 Airbus ECA Credit Facility, Floating Rate Tranche [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 23
Floating rate tranches | $ $ 159,856
Export Credit Facilities [Member] | 2004 Airbus ECA Credit Facility, Floating Rate Tranche [Member] | LIBOR [Member]  
Debt Instrument [Line Items]  
Spread over reference rate 1.49%
Export Credit Facilities [Member] | 2004 Airbus ECA Credit Facility, Fixed Rate Tranche [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 8
Fixed rate tranches | $ $ 52,412
Stated interest rate 3.85%
Export Credit Facilities [Member] | 2008 Airbus ECA Credit Facility, Floating Rate Tranche [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 2
Floating rate tranches | $ $ 73,118
Export Credit Facilities [Member] | 2008 Airbus ECA Credit Facility, Floating Rate Tranche [Member] | LIBOR [Member]  
Debt Instrument [Line Items]  
Spread over reference rate 0.97%
Export Credit Facilities [Member] | 2008 Airbus ECA Credit Facility, Fixed Rate Tranche [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 11
Fixed rate tranches | $ $ 241,682
Stated interest rate 2.70%
Export Credit Facilities [Member] | 2009 Airbus ECA Credit Facility, Floating Rate Tranche [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 2
Floating rate tranches | $ $ 30,602
Export Credit Facilities [Member] | 2009 Airbus ECA Credit Facility, Floating Rate Tranche [Member] | LIBOR [Member]  
Debt Instrument [Line Items]  
Spread over reference rate 1.11%
Export Credit Facilities [Member] | 2009 Airbus ECA Credit Facility, Fixed Rate Tranche [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 2
Fixed rate tranches | $ $ 30,194
Stated interest rate 4.60%
Export Credit Facilities [Member] | Airbus ECA Capital Markets Facilities [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 3
Fixed rate tranches | $ $ 89,806
Stated interest rate 3.60%
Export Credit Facilities [Member] | Other Airbus ECA Facilities [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 5
Fixed rate tranches | $ $ 281,458
Stated interest rate 2.38%
Export Credit Facilities [Member] | 2010 Ex-Im Facilities [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 2
Fixed rate tranches | $ $ 23,923
Stated interest rate 2.95%
Export Credit Facilities [Member] | 2012 Ex-Im Capital Markets Faciliy [Member]  
Debt Instrument [Line Items]  
Collateral (Number of aircraft) | aircraft 2
Fixed rate tranches | $ $ 172,250
Stated interest rate 1.49%