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Acquisitions and Divestitures - Other (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Jul. 01, 2014
Japanese Third Party [Member]
Jun. 30, 2014
U.S. Innerspring [Member]
facility
Sep. 30, 2014
U.S. Innerspring [Member]
Sep. 30, 2014
U.S. Innerspring [Member]
Jun. 30, 2014
U.S. Innerspring [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Number of divestitures     3      
Total consideration       $ 45.0 $ 45.0 $ 47.8
Non-cash consideration       1.5 1.5  
Working capital adjustment       2.8    
Assets of disposal group 66.8          
Loss on disposal         23.2  
Transaction costs       1.4 1.4  
Acquisition cost   $ 8.5