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

Debt (Export credit facilities) (Details)

v3.19.3.a.u2
Debt (Export credit facilities) (Details) - Export credit facilities - Secured
12 Months Ended
Dec. 31, 2019
Minimum  
Debt Instrument [Line Items]  
Debt instrument term 10 years
Maximum  
Debt Instrument [Line Items]  
Debt instrument term 12 years