Derivative Financial Instruments - Cash Flow Hedges (Details) - Hedging Instrument - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2018
Cash Flow Hedging
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivatives	$ (14,070)	$ (8,595)
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	4,786	6,857
Cash Flow Hedging | Fuel swaps
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivatives	(1,195)	18,855
Cash Flow Hedging | Fuel swaps | Operating income
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	4,438	5,679
Cash Flow Hedging | Fuel swaps | Other expense (income)
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	4,438	5,679
Cash Flow Hedging | Foreign currency swaps
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivatives		(27,450)
Cash Flow Hedging | Foreign currency swaps | Cost of goods sold
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income		1,178
Cash Flow Hedging | Foreign denominated debt
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivatives	(12,875)
Cash Flow Hedging | Foreign denominated debt | Cost of goods sold
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	348
Cash Flow Hedging | Foreign denominated debt | Other expense (income)
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	0	0
Net Investment Hedging
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivatives	(40,820)	(101,580)
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	0	0
Net Investment Hedging | Foreign currency swaps
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivatives	(24,420)	(56,580)
Net Investment Hedging | Foreign currency swaps | Other expense (income)
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	0	0
Net Investment Hedging | Foreign denominated debt
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivatives	(16,400)	(45,000)
Net Investment Hedging | Foreign denominated debt | Other expense (income)
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	$ 0	$ 0