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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (Unaudited) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Redemption value adjustment $ 1.0us-gaap_MinorityInterestChangeInRedemptionValue  
Comfort Revolution    
Income attributable to Comfort Revolution, LLC $ 0.6us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
$ 0.3us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember