Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 408.7	$ 461.6	$ 233.9
Other comprehensive income (loss), net of tax:
Defined benefit plan adjustments	103.7	77.5	(59.3)
Derivative instruments and hedging activities	52.0	(31.2)	2.8
Foreign currency translation adjustments	(198.1)	(108.3)	139.7
Total other comprehensive income (loss)	(42.4)	(62.0)	83.2
Consolidated comprehensive income	366.3	399.6	317.1
Less: Comprehensive income attributable to noncontrolling interests	73.5	90.8	91.0
Comprehensive income attributable to Lear	$ 292.8	$ 308.8	$ 226.1