Goodwill and Other Intangible Assets - Goodwill by Reportable Business Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill, Beginning balance	$ 709.4	$ 736.5
Goodwill resulting from acquisition	7.4
Foreign currency translation adjustments	5.7	(27.1)
Goodwill, Ending balance	722.5	709.4
Tempur North America | Tempur Sealy U.S.
Goodwill [Roll Forward]
Goodwill, Beginning balance	562.8	574.5
Goodwill resulting from acquisition	7.4
Foreign currency translation adjustments	1.8	(11.7)
Goodwill, Ending balance	572.0	562.8
Tempur International | Sealy Canada
Goodwill [Roll Forward]
Goodwill, Beginning balance	146.6	162.0
Goodwill resulting from acquisition	0.0
Foreign currency translation adjustments	3.9	(15.4)
Goodwill, Ending balance	$ 150.5	$ 146.6