Goodwill and other intangible assets - components of intangible assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 3,011,084	$ 3,033,706
Accumulated Amortization	(854,799)	(708,654)
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite lived intangible assets	27,940	28,457
Accumulated Amortization	0	0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,021,852	1,030,194
Accumulated Amortization	(367,585)	(322,972)
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,351,990	1,363,516
Accumulated Amortization	(402,340)	(322,539)
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	23,369	23,465
Accumulated Amortization	(18,859)	(17,860)
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	563,315	565,070
Accumulated Amortization	(50,718)	(36,379)
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,618	23,004
Accumulated Amortization	$ (15,297)	$ (8,904)