Earnings Per Common Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator [Abstract]
Net (loss) income attributable to Tempur Sealy International, Inc.	$ 27.4	$ 12.5
Denominator [Abstract]
Denominator for basic earnings per common share-weighted average shares (in shares)	60.7	60.0
Effect of dilutive securities [Abstract]
Employee stock-based compensation (in shares)	1.2	1.2
Denominator for diluted earnings per common share-adjusted weighted average shares (in shares)	61.9	61.2
Basic earnings per common share (in dollars per share)	$ 0.45	$ 0.21
Diluted earnings per common share (in dollars per share)	$ 0.44	$ 0.20
Shares excluded from diluted earnings per common share computation as anti-dilutive (in shares)	0.3	0.4