Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net earnings (loss)	$ (136.8)	$ 309.9	$ 402.6
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	40.9	(71.8)	(18.2)
Cash flow hedges	4.1	(3.5)	10.5
Defined benefit pension plans	4.8	20.1	21.7
Other comprehensive income (loss), net of tax	49.8	(55.2)	14.0
Comprehensive income (loss)	(87.0)	254.7	416.6
Less: comprehensive income attributable to noncontrolling interest	0.0	(0.1)	(0.1)
Comprehensive income (loss) attributable to Leggett & Platt, Inc.	$ (87.0)	$ 254.6	$ 416.5