Debt - Schedule of borrowings outstanding (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Senior Notes	$ 375.0	$ 375.0
Long-term Line of Credit	0	650.0
Capital Lease Obligations And Other	27.6
Debt and Capital Lease Obligations	1,836.5	1,025.0
Current portion of long term debt	(39.6)	0
Long-term debt	1,796.9	1,025.0
Sealy Notes [Member]
Debt Instrument [Line Items]
Notes Payable	99.6
Stated percentage (in hundredths)	8.00%
Term A Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	522.5
Term B Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	737.3
2012 Credit Agreement [Member] | Term A Facility [Member]
Debt Instrument [Line Items]
Index rate or LIBOR plus (in hundredths)	1.50%
Effective interest rate at period end (in hundredths)	2.50%
2012 Credit Agreement [Member] | Term B Facility [Member]
Debt Instrument [Line Items]
Index rate or LIBOR plus (in hundredths)	1.75%
Effective interest rate at period end (in hundredths)	2.75%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	$ 74.5
Index rate or LIBOR plus (in hundredths)	2.25%
Effective interest rate at period end (in hundredths)	3.25%