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Retirement Plans - Information about defined benefit plans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
facility
Retirement plans  
Number of active plants at which a defined benefit pension plan for current and former hourly employees is provided 4
Number of previously closed U.S. facilities at which a defined benefit pension plan for current and former hourly employees was provided 8
Components of net periodic pension cost for employees  
Service cost $ 0.9
Interest cost 1.3
Expected return on assets (1.5)
Amortization of unrecognized net loss 0
Other changes in plan assets and benefit obligations recognized in accumulated other comprehensive income  
Net loss (6.2)
Amortization of prior service cost 1.0
Total recognized in other comprehensive income (5.2)
Assumptions, calculated on a weighted-average basis, were used to determine pension costs  
Settlement (discount) rate (as a percent) 4.23% [1]
Expected long term return on plan assets (as a percent) 6.92%
Weighted average rate of increase in future compensation levels (as a percent) 0.00%
Change in Benefit Obligation:  
Projected benefit obligation at beginning of year 39.9
Service cost 0.9
Interest cost 1.3
Plan changes 0.5
Actuarial losses (4.8)
Benefits paid (0.5)
Expenses paid (0.3)
Foreign currency exchange rate changes (0.6)
Projected benefit obligation at end of year 36.4
Change in Plan Assets:  
Fair value of plan assets at beginning of year 26.2
Actual return on assets 2.9
Employer contribution 2.8
Plan settlements (0.4)
Benefits paid (0.5)
Expenses paid (0.3)
Foreign currency exchange rate changes (0.2)
Fair value of plan assets at end of year 30.5
Funded status (5.9)
Amounts Recognized in the Consolidated Balance Sheets:  
Noncurrent portion of benefit liability 6.7
Non-current benefit asset 0.8
Accumulated other comprehensive income (5.2)
Accumulated Benefit Obligation and Fair Value of Assets:  
Accumulated benefit obligation (36.4)
Projected benefit obligation (36.4)
Fair value of assets 30.5
Funded status (5.9)
Amounts Recognized in Accumulated Other Comprehensive Income:  
Net loss (6.2)
Prior service credit 1.0
Net amount recognized as of fiscal year end (5.2)
Assumptions, calculated on a weighted-average basis, were used to determine benefit obligations  
Settlement (discount) rate (as a percent) 5.00% [2]
Weighted average rate of increase in future compensation levels (as a percent) 0.00%
Amounts in accumulated other comprehensive income/(loss) that are expected to be recognized as components of net income during the next year  
Amortization of net gain 0.2
Amortization of prior service cost 0
Continuing operations
 
Components of net periodic pension cost for employees  
Net periodic pension cost 0.7
Sealy [Member]
 
Retirement plans  
Ownership interest (as a percent) 100.00%
Number of facilities, employees working at are covered by defined benefit pension plan 1
United states retirement plan
 
Assumptions, calculated on a weighted-average basis, were used to determine pension costs  
Settlement (discount) rate (as a percent) 4.25%
United states retirement plan | Sealy [Member]
 
Change in Benefit Obligation:  
Projected benefit obligation at end of year 33.3
Change in Plan Assets:  
Fair value of plan assets at end of year 26.7
Accumulated Benefit Obligation and Fair Value of Assets:  
Projected benefit obligation (33.3)
Fair value of assets 26.7
Canadian retirement plan
 
Assumptions, calculated on a weighted-average basis, were used to determine pension costs  
Settlement (discount) rate (as a percent) 4.00%
Canadian retirement plan | Sealy [Member]
 
Change in Benefit Obligation:  
Projected benefit obligation at end of year 3.1
Change in Plan Assets:  
Fair value of plan assets at end of year 3.8
Accumulated Benefit Obligation and Fair Value of Assets:  
Projected benefit obligation (3.1)
Fair value of assets $ 3.8
[1] Due to current economic differences in the interest rates in the jurisdictions of the retirement plans, the discount rates used in 2013 to determine the expenses for the United States retirement plan and Canadian retirement plan were 4.25% and 4.00%, respectively.
[2] The discount rates used in 2013 to determine the benefit obligations for the United States retirement plan and Canadian retirement plan were both 5.00%.