Goodwill and Other Intangible Assets, Net - Schedule of Other Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Total carrying value	$ 3,288,486	$ 3,341,032
Total accumulated amortization	(613,004)	(489,097)
Other intangible assets, net	2,675,482	2,851,935
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Total carrying value	2,639,670	2,653,446
Total accumulated amortization	(422,395)	(302,047)
Trade names & patents
Finite-Lived Intangible Assets [Line Items]
Total carrying value	180,173	178,968
Total accumulated amortization	(35,015)	(27,213)
Technological know-how
Finite-Lived Intangible Assets [Line Items]
Total carrying value	466,154	468,256
Total accumulated amortization	(155,893)	(135,269)
Other
Finite-Lived Intangible Assets [Line Items]
Total carrying value	2,489	40,362
Total accumulated amortization	$ 299	$ (24,568)