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Lease obligations - Lease payments (Details) $ in Thousands | Dec. 31, 2020 USD ($)
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Disclosure Of Maturity Analysis Of Lease Payments [Line Items] |
Lease payments | $ 982,387
Interest component | 260,153
Lease obligations | 722,234
2021 |
Disclosure Of Maturity Analysis Of Lease Payments [Line Items] |
Lease payments | 142,096
Interest component | 44,580
Lease obligations | 97,516
2022 |
Disclosure Of Maturity Analysis Of Lease Payments [Line Items] |
Lease payments | 118,139
Interest component | 40,075
Lease obligations | 78,064
2023 |
Disclosure Of Maturity Analysis Of Lease Payments [Line Items] |
Lease payments | 110,354
Interest component | 35,760
Lease obligations | 74,594
2024 |
Disclosure Of Maturity Analysis Of Lease Payments [Line Items] |
Lease payments | 101,467
Interest component | 31,622
Lease obligations | 69,845
2025 |
Disclosure Of Maturity Analysis Of Lease Payments [Line Items] |
Lease payments | 90,875
Interest component | 27,370
Lease obligations | 63,505
Thereafter |
Disclosure Of Maturity Analysis Of Lease Payments [Line Items] |
Lease payments | 419,456
Interest component | 80,746
Lease obligations | $ 338,710

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- Definition [Line Items] for Disclosure Of Maturity Analysis Of Lease Payments [Table] + References No definition available. + Details
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