CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income before non-controlling interests	$ 189.4	$ 97.6	$ 140.7
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	9.5	(18.9)	29.1
Net change in pension benefits, net of tax	(1.9)	(0.9)	(0.5)
Unrealized loss on cash flow hedging derivatives, net of tax	0.0	0.0	(0.6)
Total other comprehensive income	7.6	(19.8)	28.0
Comprehensive income	197.0	77.8	168.7
Less: Comprehensive loss attributable to non-controlling interests	(0.1)	(2.9)	(10.7)
Comprehensive income attributable to Tempur Sealy International, Inc.	$ 197.1	$ 80.7	$ 179.4