Business Combination - Consideration transferred (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended		12 Months Ended
	Mar. 18, 2013		Dec. 31, 2013
Sealy [Member]
Business Acquisition [Line Items]
Cash consideration for stock	$ 231.2	[1]
Cash consideration for share-based awards	14.2	[2]
Cash consideration for 8.0% Sealy Notes	442.1	[3]
Cash consideration for repayment of Sealy Senior Notes	260.7	[4]
Cash consideration for repayment of Sealy 2014 Notes	276.9	[5]
Total consideration	1,225.1
Cash acquired	(52.2)	[6]
Net consideration transferred	1,172.9
Cash price per share (in dollars per share)	$ 2.20
Number of shares issued (shares)	105.1
Consideration that would have been payable to a holder of common stock			201.0
Direct transaction costs			18.7
Incremental interest expense			$ 19.9
Sealy Notes [Member]
Business Acquisition [Line Items]
Stated percentage (in hundredths)			8.00%
Sealy Notes [Member] | Sealy [Member]
Business Acquisition [Line Items]
Stated percentage (in hundredths)	8.00%
Senior Notes [Member]
Business Acquisition [Line Items]
Stated percentage (in hundredths)			6.875%
Senior Notes [Member] | Sealy [Member]
Business Acquisition [Line Items]
Stated percentage (in hundredths)	10.875%
Subordinated Debt [Member] | Sealy [Member]
Business Acquisition [Line Items]
Stated percentage (in hundredths)	8.25%

[1] The cash consideration for outstanding shares of Sealy common stock is the product of the agreed-upon cash per share price of $2.20 and total Sealy shares of 105.1 million.

[2] The cash consideration for share-based awards is the product of the agreed-upon cash per share price of $2.20 and the total number of RSUs and DSUs outstanding and the “in the money” stock options net of the weighted average exercise price.

[3] The cash consideration for Sealy’s 8.0% Senior Secured Third Lien Convertible Notes due 2016 (“8.0% Sealy Notes”) is the result of applying the adjusted equity conversion rate to the 8.0% Sealy Notes tendered for conversion and multiplying the result by the agreed-upon cash per share price of $2.20. The 8.0% Sealy Notes that were converted represented the right to receive the same merger consideration that would have been payable to a holder of 201.0 million shares of Sealy common stock, subject to adjustment in accordance with the terms of the supplemental indenture governing the 8.0% Sealy Notes.

[4] The cash consideration for Sealy’s 10.875% Senior Notes due 2016 (“Sealy Senior Notes”) reflects the repayment of the outstanding obligation.

[5] The cash consideration for Sealy’s 8.25% Senior Subordinated Notes due 2014 (“Sealy 2014 Notes”) reflects the repayment of the outstanding obligation.

[6] Represents the Sealy cash balance acquired at acquisition.