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Debt (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Sep. 24, 2015
Long-term Debt, by Current and Noncurrent [Abstract]      
Total debt $ 1,486,300,000 $ 1,602,300,000  
Less: current portion (173,800,000) (66,400,000)  
Long-term debt 1,312,500,000 1,535,900,000  
2020 Senior Notes      
Long-term Debt, by Current and Noncurrent [Abstract]      
Senior notes $ 375,000,000 $ 375,000,000  
Line of Credit Facility [Abstract]      
Stated percentage 6.875% 6.875%  
2023 Senior Notes      
Long-term Debt, by Current and Noncurrent [Abstract]      
Senior notes $ 450,000,000 $ 0 $ 450,000,000
Line of Credit Facility [Abstract]      
Stated percentage 5.625% 0.00% 5.625%
Sealy notes      
Long-term Debt, by Current and Noncurrent [Abstract]      
8.0% Sealy Notes $ 109,300,000 $ 104,700,000  
Line of Credit Facility [Abstract]      
Stated percentage 8.00% 8.00%  
Capital lease obligations and other      
Long-term Debt, by Current and Noncurrent [Abstract]      
Capital lease obligations and other $ 28,700,000 $ 27,700,000  
Revolving credit facility      
Long-term Debt, by Current and Noncurrent [Abstract]      
Line of credit $ 0 $ 16,000,000  
Revolving credit facility | Base Rate      
Line of Credit Facility [Abstract]      
Index rate or LIBOR plus (in hundredths) 1.75% 2.00%  
Revolving credit facility | London Interbank Offered Rate (LIBOR)      
Line of Credit Facility [Abstract]      
Index rate or LIBOR plus (in hundredths) 2.75% 3.00%  
2012 Credit Agreement      
Line of Credit Facility [Abstract]      
Domestic qualified cash excluded (in hundredths) 100.00%    
Foreign qualified cash excluded (in hundredths) 60.00%    
Domestic and foreign qualified cash exclusions, maximum $ 150,000,000.0    
Domestic qualified cash 40,000,000    
Foreign qualified cash 19,100,000    
2012 Credit Agreement | Term A Facility      
Long-term Debt, by Current and Noncurrent [Abstract]      
Line of credit $ 422,200,000 $ 484,500,000  
2012 Credit Agreement | Term A Facility | London Interbank Offered Rate (LIBOR)      
Line of Credit Facility [Abstract]      
Index rate or LIBOR plus (in hundredths) 2.00% 2.25%  
2012 Credit Agreement | Term B Facility      
Long-term Debt, by Current and Noncurrent [Abstract]      
Line of credit $ 101,100,000 $ 594,400,000  
2012 Credit Agreement | Term B Facility | London Interbank Offered Rate (LIBOR)      
Line of Credit Facility [Abstract]      
Index rate or LIBOR plus (in hundredths) 2.75% 2.75%  
Interest rate floor 0.75% 0.75%