Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Cost	$ 4,705,861	$ 4,590,520
Accum. amort.	(1,230,643)	(934,677)
Net book value	3,475,218	3,655,843
Trade names
Finite-Lived Intangible Assets [Line Items]
Assets not subject to amortization:	587,737	578,279
In process research and development
Finite-Lived Intangible Assets [Line Items]
Assets not subject to amortization:	1,418	62,000
Customer related intangibles
Finite-Lived Intangible Assets [Line Items]
Cost	3,355,232	3,272,081
Accum. amort.	(913,680)	(712,718)
Net book value	2,441,552	2,559,363
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Cost	544,046	462,152
Accum. amort.	(207,678)	(144,025)
Net book value	336,368	318,127
Software
Finite-Lived Intangible Assets [Line Items]
Cost	184,703	184,761
Accum. amort.	(84,825)	(56,882)
Net book value	99,878	127,879
Patents and other protective rights
Finite-Lived Intangible Assets [Line Items]
Cost	26,090	24,656
Accum. amort.	(22,729)	(20,399)
Net book value	3,361	4,257
Trade names
Finite-Lived Intangible Assets [Line Items]
Cost	6,635	6,591
Accum. amort.	(1,731)	(653)
Net book value	$ 4,904	$ 5,938