Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives - Effects of Derivatives Designated as Cash Flow Hedges (Details)

v3.21.2
Fair Value Measurements and Derivatives - Effects of Derivatives Designated as Cash Flow Hedges (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Other income (expense), net        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income $ (1,538) $ (11,964) $ (11,728) $ (26,284)
Cash Flow Hedging        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 44,674 54,478 (28,363) (251,382)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (13,542) (28,782) (35,380) (50,781)
Cash Flow Hedging | Fuel        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (8,652) (13,878) (16,823) (20,095)
Cash Flow Hedging | Depreciation and amortization        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (1,266) (1,266) (2,533) (2,395)
Cash Flow Hedging | Interest expense, net        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (2,086) (1,674) (4,296) (2,007)
Cash Flow Hedging | Fuel contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 25,456 27,769 49,506 (170,708)
Cash Flow Hedging | Fuel contracts | Fuel        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (8,652) (13,878) (16,823) (20,095)
Cash Flow Hedging | Foreign currency contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 19,281 27,694 (78,160) (70,193)
Cash Flow Hedging | Foreign currency contracts | Depreciation and amortization        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (1,266) (1,266) (2,533) (2,395)
Cash Flow Hedging | Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income (63) (985) 291 (10,481)
Cash Flow Hedging | Interest rate contracts | Interest expense, net        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income $ (2,086) $ (1,674) $ (4,296) $ (2,007)