Segment Reporting - Summary of Revenues from External Customers and Other Financial Information by Reportable Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 01, 2023		Apr. 02, 2022	Dec. 31, 2022
Segment Reporting Information
Revenues from external customers	$ 5,845.5		$ 5,208.4
Segment earnings	237.3		128.5
Depreciation and amortization	147.2		143.4
Capital expenditures	111.8		130.3
Total assets	14,404.2	[1]	13,727.3	$ 13,763.0
Other
Segment Reporting Information
Revenues from external customers	0.0		0.0
Segment earnings	(90.8)		(87.5)
Depreciation and amortization	5.1		4.4
Capital expenditures	4.6		7.1
Total assets	1,872.9		2,120.6
Seating
Segment Reporting Information
Revenues from external customers	4,453.0		3,912.5
Seating | Operating segments
Segment Reporting Information
Revenues from external customers	4,453.0		3,912.5
Segment earnings	285.8		200.1
Depreciation and amortization	95.9		92.8
Capital expenditures	63.6		77.1
Total assets	8,549.8		7,975.0
E-Systems
Segment Reporting Information
Revenues from external customers	1,392.5		1,295.9
E-Systems | Operating segments
Segment Reporting Information
Revenues from external customers	1,392.5		1,295.9
Segment earnings	42.3		15.9
Depreciation and amortization	46.2		46.2
Capital expenditures	43.6		46.1
Total assets	$ 3,981.5		$ 3,631.7

[1] Unaudited