Segment Information - Operating Results by Segment (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 07, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Net sales		$ 4,934,260	$ 4,822,065	$ 9,671,093	$ 9,408,359
Income before income taxes		302,129	300,271	513,641	529,590
Realized currency losses on divestiture	$ 27,037			27,037	0
Transaction costs			9,105		22,114
Operating Segments
Segment Reporting Information [Line Items]
Operating profit		385,615	390,224	707,091	708,722
Operating Segments | Automotive Parts
Segment Reporting Information [Line Items]
Net sales		2,774,808	2,736,201	5,397,153	5,300,460
Operating profit		228,385	243,611	407,613	428,317
Operating Segments | Industrial Parts
Segment Reporting Information [Line Items]
Net sales		1,681,721	1,602,665	3,317,144	3,150,609
Operating profit		136,334	125,191	257,362	237,382
Operating Segments | Business Products
Segment Reporting Information [Line Items]
Net sales		477,731	483,199	956,796	957,290
Operating profit		20,896	21,422	42,116	43,023
Other
Segment Reporting Information [Line Items]
Interest expense, net		(22,514)	(25,525)	(45,543)	(48,832)
Intangible asset amortization		(23,917)	(21,806)	(46,501)	(43,209)
Corporate expense		(37,055)	$ (42,622)	(101,406)	$ (87,091)
Transaction costs		$ 4,108		$ 38,222