CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Net sales	$ 669.7	$ 659.3	$ 1,317.7	$ 1,381.4
Cost of sales	393.6	390.7	773.7	826.2
Gross profit	276.1	268.6	544.0	555.2
Selling and marketing expenses	157.4	152.3	306.3	306.0
General, administrative and other expenses	67.0	69.0	136.0	135.5
Customer termination charges, net	0.0	0.0	0.0	14.4
Equity income in earnings of unconsolidated affiliates	(3.8)	(4.4)	(7.7)	(7.1)
Royalty income, net of royalty expense	0.0	(4.9)	0.0	(9.7)
Operating (loss) income	55.5	56.6	109.4	116.1
Other expense, net:
Interest expense, net	24.5	22.1	47.4	44.2
Other expense (income), net	1.2	(0.3)	(0.6)	(9.5)
Total other expense, net	25.7	21.8	46.8	34.7
Income before income taxes	29.8	34.8	62.6	81.4
Income tax provision	(8.6)	(13.1)	(18.6)	(27.7)
Net income before non-controlling interests	21.2	21.7	44.0	53.7
Less: Net loss attributable to non-controlling interests	(1.6)	(2.8)	(1.9)	(4.7)
Net income attributable to Tempur Sealy International, Inc.	$ 22.8	$ 24.5	$ 45.9	$ 58.4
Earnings per common share:
Basic (in dollars per share)	$ 0.42	$ 0.45	$ 0.84	$ 1.08
Diluted (in dollars per share)	$ 0.42	$ 0.45	$ 0.83	$ 1.07
Weighted average common shares outstanding:
Basic (in shares)	54.4	53.9	54.4	53.9
Diluted (in shares)	54.9	54.5	55.0	54.6