Goodwill and other intangible assets - Changes in carrying amount by reporting segment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill			$ 2,578,707
Accumulated impairment losses			(332,128)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 2,245,305	$ 2,246,579
Goodwill related to acquisitions	295,066	1,833
Translation and other adjustments	45,595	(3,107)
Goodwill, ending balance	2,585,966	2,245,305
Americas \| Operating Segments
Goodwill [Line Items]
Goodwill			1,881,662
Accumulated impairment losses			(332,128)
Goodwill [Roll Forward]
Goodwill, beginning balance	1,550,925	1,549,534
Goodwill related to acquisitions	149,877	439
Translation and other adjustments	(520)	952
Goodwill, ending balance	1,700,282	1,550,925
EMEA \| Operating Segments
Goodwill [Line Items]
Goodwill			480,615
Accumulated impairment losses			0
Goodwill [Roll Forward]
Goodwill, beginning balance	475,772	480,615
Goodwill related to acquisitions	22,364	189
Translation and other adjustments	38,092	(5,032)
Goodwill, ending balance	536,228	475,772
Asia \| Operating Segments
Goodwill [Line Items]
Goodwill			211,547
Accumulated impairment losses			0
Goodwill [Roll Forward]
Goodwill, beginning balance	213,725	211,547
Goodwill related to acquisitions	15,698	1,205
Translation and other adjustments	8,023	973
Goodwill, ending balance	237,446	213,725
OEM \| Operating Segments
Goodwill [Line Items]
Goodwill			4,883
Accumulated impairment losses			$ 0
Goodwill [Roll Forward]
Goodwill, beginning balance	4,883	4,883
Goodwill related to acquisitions	107,127	0
Translation and other adjustments	0	0
Goodwill, ending balance	$ 112,010	$ 4,883

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03(10)(1))
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