Derivative Instruments, Hedging Activities and Fair Value - Derivatives Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative [Line Items]
Product Revenues	$ 398,841	$ 329,902
Interest Expense	(12,649)	(5,507)
Income From Discontinued Businesses	(225)	13,750
Amount of gain or reclassified from accumulated other comprehensive loss into income	721
Product Revenues | Interest rate swaps
Derivative [Line Items]
Amount of gain or reclassified from accumulated other comprehensive loss into income	0
Amount of gain or reclassified from accumulated other comprehensive loss into income		0
Product Revenues | Foreign exchange contracts
Derivative [Line Items]
Amount of gain or reclassified from accumulated other comprehensive loss into income	1,404
Amount of gain or reclassified from accumulated other comprehensive loss into income		32
Amount excluded from effectiveness testing recognized in earnings	183
Amount excluded from effectiveness testing recognized in earnings		78
Product Revenues | Cross-currency interest rate swaps
Derivative [Line Items]
Amount of gain or reclassified from accumulated other comprehensive loss into income	0
Amount of gain or reclassified from accumulated other comprehensive loss into income		0
Interest Expense | Interest rate swaps
Derivative [Line Items]
Amount of gain or reclassified from accumulated other comprehensive loss into income	(378)
Amount of gain or reclassified from accumulated other comprehensive loss into income		301
Interest Expense | Foreign exchange contracts
Derivative [Line Items]
Amount of gain or reclassified from accumulated other comprehensive loss into income	0
Amount of gain or reclassified from accumulated other comprehensive loss into income		0
Amount excluded from effectiveness testing recognized in earnings	0
Amount excluded from effectiveness testing recognized in earnings		0
Interest Expense | Cross-currency interest rate swaps
Derivative [Line Items]
Amount of gain or reclassified from accumulated other comprehensive loss into income	(305)
Amount of gain or reclassified from accumulated other comprehensive loss into income		(314)
Cost of services and products sold | Foreign currency exchange forward contracts
Derivative [Line Items]
Amount of gain or reclassified from accumulated other comprehensive loss into income	1,404
Amount of Gain Recognized in Income on Derivatives	5,542	2,323
Product Revenues
Derivative [Line Items]
Product Revenues	107,502	100,382
Cost of services sold	80,149	69,309
Products And Services, Service Revenue [Member]
Derivative [Line Items]
Product Revenues	291,339	229,520
Cost of services sold	$ 236,319	$ 181,871