Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net earnings	$ 402.6	$ 253.1	$ 314.1
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(18.2)	27.8	5.0
Cash flow hedges	10.5	5.5	7.7
Defined benefit pension plans	21.7	(9.0)	(11.9)
Other comprehensive income	14.0	24.3	0.8
Comprehensive income	416.6	277.4	314.9
Less: comprehensive (income) attributable to noncontrolling interest	(0.1)	0.0	(0.1)
Comprehensive income attributable to Leggett & Platt, Inc.	$ 416.5	$ 277.4	$ 314.8