Fair value as of the balance sheet date of all derivative liabilities designated as interest rate fair value hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_InterestRateFairValueHedgeLiabilityAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013 Senior Notes [Member]	Dec. 31, 2013 Sealy Notes [Member]	Dec. 31, 2013 Sealy Notes [Member]	Mar. 18, 2013 Sealy Notes [Member]	Dec. 31, 2013 Recurring [Member]	Dec. 31, 2012 Recurring [Member]	Dec. 31, 2013 Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1)	Dec. 31, 2012 Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1)	Dec. 31, 2013 Recurring [Member] Significant Other Observable Inputs (Level 2)	Dec. 31, 2012 Recurring [Member] Significant Other Observable Inputs (Level 2)	Dec. 31, 2013 Recurring [Member] Significant Unobservable Inputs (Level 3)	Dec. 31, 2012 Recurring [Member] Significant Unobservable Inputs (Level 3)
Liabilities:
Interest rate swap					$ 2.3	$ 4.3	$ 0	$ 0	$ 2.3	$ 4.3	$ 0	$ 0
Notes, fair value	$ 405.0		$ 99.9	$ 96.2
Stated percentage (in hundredths)	6.875%	8.00%	8.00%