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Fair Value Measurements (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Sep. 24, 2015
Dec. 31, 2014
Apr. 12, 2013
Mar. 19, 2013
Mar. 18, 2013
Dec. 19, 2012
2023 Notes              
Liabilities, Fair Value Disclosure [Abstract]              
Stated percentage 5.625% 5.625% 0.00%        
Senior Notes              
Liabilities, Fair Value Disclosure [Abstract]              
Stated percentage 6.875%   6.875%       6.875%
8.0% Sealy Notes              
Liabilities, Fair Value Disclosure [Abstract]              
Notes, fair value           $ 96.2  
Stated percentage 8.00%   8.00% 8.00% 8.00%    
Significant Other Observable Inputs (Level 2) | 2023 Notes              
Liabilities, Fair Value Disclosure [Abstract]              
Notes, fair value $ 453.4            
Significant Other Observable Inputs (Level 2) | Senior Notes              
Liabilities, Fair Value Disclosure [Abstract]              
Notes, fair value 393.8   $ 398.4        
Significant Other Observable Inputs (Level 2) | 8.0% Sealy Notes              
Liabilities, Fair Value Disclosure [Abstract]              
Notes, fair value 112.7   110.7        
Fair Value, Measurements, Recurring              
Assets, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts 12.5   1.8        
Assets, Fair Value 12.5   1.8        
Liabilities, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts 1.2   0.1        
Notes, fair value 1.2   0.1        
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)              
Assets, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts     0.0        
Assets, Fair Value 0.0   0.0        
Liabilities, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts 0.0   0.0        
Notes, fair value 0.0   0.0        
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)              
Assets, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts 12.5   1.8        
Assets, Fair Value 12.5   1.8        
Liabilities, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts 1.2   0.1        
Notes, fair value 1.2   0.1        
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)              
Assets, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts 0.0   0.0        
Assets, Fair Value 0.0   0.0        
Liabilities, Fair Value Disclosure [Abstract]              
Foreign exchange forward contracts 0.0   0.0        
Notes, fair value $ 0.0   $ 0.0