CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$ 767.3	$ 880.0	$ 764.4	$ 739.5	$ 745.5	$ 827.4	$ 715.0	$ 701.9	$ 3,151.2	$ 2,989.8	$ 2,464.3
Cost of sales									1,902.3	1,839.4	1,449.4
Gross profit	313.1	359.6	297.5	278.7	294.1	318.5	268.3	269.5	1,248.9	1,150.4	1,014.9
Selling and marketing expenses									648.0	619.9	522.9
General, administrative and other expenses									322.0	280.6	266.3
Equity income in earnings of unconsolidated affiliates									(11.9)	(8.3)	(4.4)
Royalty income, net of royalty expense									(18.3)	(18.1)	(13.7)
Operating (loss) income	91.8	110.9	52.0	54.4	76.5	87.1	50.3	62.4	309.1	276.3	243.8
Other expense, net:
Interest expense, net									96.1	91.9	110.8
Loss on disposal, net									0.0	23.2	0.0
Other expense (income), net									12.9	(13.7)	5.0
Total other expense									109.0	101.4	115.8
Income before income taxes									200.1	174.9	128.0
Income tax provision									(125.4)	(64.9)	(49.1)
Net income before non-controlling interest									74.7	110.0	78.9
Less: net income attributable to non-controlling interest									1.2	1.1	0.3
Net income attributable to Tempur Sealy International, Inc.	$ (11.3)	$ 40.2	$ 21.2	$ 23.4	$ 46.6	$ 37.1	$ (2.2)	$ 27.4	$ 73.5	$ 108.9	$ 78.6
Earnings per common share:
Basic (in dollars per share)	$ (0.18)	$ 0.65	$ 0.35	$ 0.38	$ 0.77	$ 0.61	$ (0.04)	$ 0.45	$ 1.19	$ 1.79	$ 1.30
Diluted (in dollars per share)	$ (0.18)	$ 0.64	$ 0.34	$ 0.38	$ 0.75	$ 0.60	$ (0.04)	$ 0.44	$ 1.17	$ 1.75	$ 1.28
Weighted average common shares outstanding:
Basic (in shares)									61.7	60.8	60.3
Diluted (in shares)									62.6	62.1	61.6