Business segments and other information - segment result (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 29, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jul. 01, 2018 USD ($)	Apr. 01, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Revenues From External Customers And Long Lived Assets [Line Items]
Number of reportable segments | segment									4
Net revenues	$ 680,952	$ 648,319	$ 652,507	$ 613,584	$ 641,615	$ 609,672	$ 609,866	$ 587,230	$ 2,595,362	$ 2,448,383	$ 2,146,303
Operating Profit									427,254	321,704	372,279
Depreciation and Amortization									218,369	214,714	160,338
Operating Segments
Revenues From External Customers And Long Lived Assets [Line Items]
Operating Profit									545,441	490,317	450,627
Segment Reconciling Items
Revenues From External Customers And Long Lived Assets [Line Items]
Operating Profit									(118,187)	(168,613)	(78,348)
Americas
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues									1,492,274	1,351,699	1,141,406
Depreciation and Amortization									153,419	146,016	105,811
Americas | Operating Segments
Revenues From External Customers And Long Lived Assets [Line Items]
Operating Profit									319,933	255,798	240,982
EMEA
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues									588,043	603,813	552,722
Depreciation and Amortization									44,328	47,171	34,322
EMEA | Operating Segments
Revenues From External Customers And Long Lived Assets [Line Items]
Operating Profit									94,424	106,090	92,430
Asia
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues									294,328	286,895	269,208
Depreciation and Amortization									14,072	12,917	11,868
Asia | Operating Segments
Revenues From External Customers And Long Lived Assets [Line Items]
Operating Profit									73,090	78,135	75,637
OEM
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues									220,717	205,976	182,967
Depreciation and Amortization									6,550	8,610	8,337
OEM | Operating Segments
Revenues From External Customers And Long Lived Assets [Line Items]
Operating Profit									$ 57,994	$ 50,294	$ 41,578