Derivative Instruments, Hedging Activities and Fair Value - Derivatives Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative [Line Items]
Product Revenues	$ 544,301	$ 509,398	$ 1,642,976	$ 1,355,520
Interest Expense	(16,004)	(15,794)	(48,854)	(43,396)
Gain or (loss) reclassified from AOCI into income	(454)	(1,225)	(2,134)	(1,199)
Product Revenues | Interest rate swaps
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	0	0
Product Revenues | Foreign exchange contracts
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	418	(174)	465	1,562
Amount excluded from effectiveness testing recognized in earnings	24	12	62	208
Derivative Instruments, Loss Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing	(1)	3	(1)	24
Product Revenues | Cross-currency interest rate swaps
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	0	0
Interest Expense | Interest rate swaps
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	(872)	(739)	(2,599)	(1,849)
Interest Expense | Foreign exchange contracts
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	0	0
Amount excluded from effectiveness testing recognized in earnings	0	0
Interest Expense | Cross-currency interest rate swaps
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	0	(312)	0	(912)
Cost of services and products sold | Foreign currency exchange forward contracts
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	418	(174)	465	1,562
Amount of Gain Recognized in Income on Derivatives	4,105	(12,279)	8,109	(5,001)
Product Revenues
Derivative [Line Items]
Product Revenues	$ 105,677	$ 124,892	$ 343,171	$ 333,782