Business Combination - Preliminary purchase price allocation (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended
Mar. 18, 2013
Minimum [Member]
Identifiable intangible assets:
Discount rate (percent)	11.00%
Maximum [Member]
Identifiable intangible assets:
Discount rate (percent)	12.00%
Sealy [Member]
Business Acquisition [Line Items]
Accounts receivable	$ 185.0
Inventory	75.1
Prepaid expenses and other current assets	22.8
Accounts payable	(77.9)
Accrued expenses	(137.2)
Property, plant and equipment	242.9
Other assets	32.6
Identifiable intangible assets:
Deferred income taxes, net	(232.8)
Sealy 8.0% Notes	(96.2)
Redeemable non-controlling interest	(11.3)
Other liabilities	(77.5)
Goodwill	541.8
Net consideration transferred	1,172.9
Sealy [Member] \| Contractual or Distributer Relationships [Member]
Identifiable intangible assets:
Finite-lived intangible assets	91.1
Sealy [Member] \| Developed Technology Rights [Member]
Identifiable intangible assets:
Finite-lived intangible assets	87.1
Sealy [Member] \| Database Rights [Member]
Identifiable intangible assets:
Finite-lived intangible assets	3.9
Sealy [Member] \| Trade Names [Member]
Identifiable intangible assets:
Finite-lived intangible assets	2.3
Sealy [Member] \| Trade Names [Member]
Identifiable intangible assets:
Indefinite-lived intangible assets	$ 521.2

Amount of acquisition cost of a business combination allocated to redeemable noncontrolling interests.

No definition available.

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

+ References

+ Details

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- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.

+ References

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used.

+ References

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to receivables.

+ References

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity.

+ References

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to accrued expenses of the acquired entity.

+ References

+ Details

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- Definition

Gross amount of acquisition cost of a business combination allocated to noncurrent deferred tax assets.

+ References

No definition available.

+ Details

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph c

-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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 53

-Subparagraph d

-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.

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.

+ References

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to notes payables and long-term debt assumed from the acquired entity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-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.

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 98-1

-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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 37

-Subparagraph g

-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.

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- Definition

Amount of acquisition cost of a business combination allocated to other assets not separately disclosed in the balance sheet.

+ References

No definition available.

+ Details

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- Definition

Amount of acquisition cost of a business combination allocated to other liabilities not separately disclosed in the balance sheet.

+ References

No definition available.

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

+ References

+ Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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