Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives (Details 3)

v3.10.0.1
Fair Value Measurements and Derivatives (Details 3) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Derivatives Fair Value [Line Items]        
Fuel $ 99,643 $ 91,231 $ 288,286 $ 266,780
Depreciation and amortization 143,700 134,532 415,648 376,878
Interest expense, net 69,540 66,339 202,226 183,495
Cash Flow Hedging        
Derivatives Fair Value [Line Items]        
Amount of gain or (loss) reclassified from accumulated other comprehensive income (loss) into income 10,706 (11,644) 19,214 (31,593)
Fuel 99,643 91,231 288,286 266,780
Depreciation and amortization 143,700 134,532 415,648 376,878
Interest expense, net 69,540 66,339 202,226 183,495
Cash Flow Hedging | Fuel contracts | Fuel        
Derivatives Fair Value [Line Items]        
Amount of gain or (loss) reclassified from accumulated other comprehensive income (loss) into income 11,595 (9,796) 23,024 (26,383)
Cash Flow Hedging | Foreign currency forward contracts | Depreciation and amortization expense        
Derivatives Fair Value [Line Items]        
Amount of gain or (loss) reclassified from accumulated other comprehensive income (loss) into income (703) (1,157) (2,761) (2,909)
Cash Flow Hedging | Interest rate contracts | Interest expense, net        
Derivatives Fair Value [Line Items]        
Amount of gain or (loss) reclassified from accumulated other comprehensive income (loss) into income $ (186) $ (691) $ (1,049) $ (2,301)