Derivatives - Gain (Loss) for Derivative Instruments Designated as Hedges (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 385	$ 643
Currency Swap
Derivative Instruments, Gain (Loss) [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	8,500
Gain (Loss) Reclassified from AOCI to Income	4,700
Currency Swap | Other income/expense, net | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI	(346)
Gain (Loss) Reclassified from AOCI to Income	(1,622)
Gain (Loss) Recorded Directly to Income	3,337
Currency Swap | Other income/expense, net | Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI	(2,006)
Gain (Loss) Reclassified from AOCI to Income	2,655
Gain (Loss) Recorded Directly to Income	0
Currency Swap | Other income/expense, net | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI	(2,231)
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	3,909
Gain (Loss) Recorded Directly to Income	0
Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net	(800)
Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	1,500
Foreign Exchange Forward | Cost of sales | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI	527	(3,795)
Gain (Loss) Reclassified from AOCI to Income	385	643
Gain (Loss) Recorded Directly to Income	$ 0	$ 0