CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income before non-controlling interest	$ 22.8	$ 32.0
Other comprehensive income, net of tax
Foreign currency translation adjustments	5.0	8.8
Pension benefits loss, net of tax	(0.6)	0.0
Unrealized loss on cash flow hedging derivatives, net of tax	0.0	(0.5)
Other comprehensive income, net of tax	4.4	8.3
Comprehensive income	27.2	40.3
Less: Comprehensive loss attributable to non-controlling interest	(0.3)	(1.9)
Comprehensive income attributable to Tempur Sealy International, Inc.	$ 27.5	$ 42.2