Goodwill and Other Intangible Assets, Net - Schedule of Other Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Total carrying value	$ 3,256,458	$ 3,331,211
Total accumulated amortization	(426,527)	(291,889)
Other intangible assets, net	2,829,931	3,039,322
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Total carrying value	2,584,701	2,658,659
Total accumulated amortization	(265,396)	(156,906)
Trade names & patents
Finite-Lived Intangible Assets [Line Items]
Total carrying value	173,319	177,770
Total accumulated amortization	(25,288)	(19,593)
Technological know-how
Finite-Lived Intangible Assets [Line Items]
Total carrying value	462,113	451,016
Total accumulated amortization	(125,100)	(93,051)
Other
Finite-Lived Intangible Assets [Line Items]
Total carrying value	36,325	43,766
Total accumulated amortization	$ (10,743)	$ (22,339)