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Summary of Significant Accounting Policies - Additional Information (Details)
shares in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
channel
facility
shares
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
Jul. 27, 2016
USD ($)
Jun. 07, 2016
USD ($)
Feb. 01, 2016
USD ($)
Business Acquisition [Line Items]            
Number of products sales channels | channel 2          
Depreciation expense $ 56,100,000 $ 53,500,000 $ 57,700,000      
Allowance for doubtful accounts included in accounts receivable, net 22,100,000 23,300,000        
Shipping and handling included in net sales 11,700,000 11,100,000 14,700,000      
Shipping and handling included in cost of sales 155,100,000 161,600,000 169,200,000      
Other income, net of expense   9,500,000 15,600,000.0      
Advertising costs charged to expense 352,700,000 360,500,000 326,700,000      
Advertising costs deferred and included in Prepaid expenses and other current assets 7,400,000 13,700,000        
Research and development costs charged to expense 26,700,000 28,700,000 21,600,000      
Royalty revenue, net of royalty expense 19,500,000 18,300,000 18,100,000      
Treasury stock repurchased 533,000,000 1,300,000 $ 2,200,000      
Self insurance reserve, excess loss coverage per claim per year 800,000          
Self insurance reserve, current 8,600,000 6,600,000        
Self insurance reserve, noncurrent 12,300,000 11,500,000        
Self insurance, recoveries $ 14,200,000          
Number of active plants | facility 2          
Number of previously closed US facilities | facility 10          
Restructuring expenses $ 8,300,000 13,500,000        
Sealy Canada            
Business Acquisition [Line Items]            
Noncontrolling interest, ownership percentage by parent 100.00%          
Variable Interest Entity, Primary Beneficiary | Comfort Revolution            
Business Acquisition [Line Items]            
Equity method investment, ownership percentage 45.00%          
Accounts Payable and Accrued Liabilities [Member]            
Business Acquisition [Line Items]            
Standard product warranty accrual $ 14,300,000 14,900,000        
Other Noncurrent Liabilities [Member]            
Business Acquisition [Line Items]            
Standard product warranty accrual 15,600,000 14,700,000        
Foreign Exchange Forward            
Business Acquisition [Line Items]            
Notional amount 25,400,000          
Gain on derivative 600,000          
Foreign exchange forward contracts 1,700,000 12,500,000        
Foreign exchange forward contracts $ 0 1,200,000        
Comfort Revolution            
Business Acquisition [Line Items]            
Percentage of noncontrolling interest from the acquisition 55.00%          
February 2016 Program            
Business Acquisition [Line Items]            
Amount of shares authorized to be repurchased           $ 200,000,000
Stock repurchase program, increase in authorized amount       $ 200,000,000 $ 200,000,000  
Treasury stock repurchased (in shares) | shares 8.7          
Treasury stock repurchased $ 2,000,000 $ 1,300,000        
Stock repurchase program, amount remaining under share repurchase authorization | shares 67.0          
Performance-based Restricted Stock Units            
Business Acquisition [Line Items]            
Shares paid for tax withholding for share based compensation | shares 0.0 0.0