Goodwill and other intangible assets - Changes in carrying amount by reporting segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 2,914,055
Goodwill			$ 2,536,730
Goodwill impairment charge	(240,000)
Goodwill related to acquisitions	(1,953)	$ 357,025
Translation and other adjustments	(39,788)	20,300
Goodwill, ending balance	2,632,314	2,914,055
Americas | Operating Segments
Goodwill [Roll Forward]
Goodwill, beginning balance	2,180,082
Goodwill			1,843,103
Goodwill impairment charge	(240,000)
Goodwill related to acquisitions	(1,953)	333,462
Translation and other adjustments	(5,360)	3,517
Goodwill, ending balance	1,932,769	2,180,082
EMEA | Operating Segments
Goodwill [Roll Forward]
Goodwill, beginning balance	487,744
Goodwill			468,524
Goodwill impairment charge	0
Goodwill related to acquisitions	0	4,284
Translation and other adjustments	(22,255)	14,936
Goodwill, ending balance	465,489	487,744
Asia | Operating Segments
Goodwill [Roll Forward]
Goodwill, beginning balance	246,229
Goodwill			$ 225,103
Goodwill impairment charge	0
Goodwill related to acquisitions	0	19,279
Translation and other adjustments	(12,173)	1,847
Goodwill, ending balance	$ 234,056	$ 246,229