Goodwill (Details) - 6 months ended Jun. 30, 2015 $ in Millions	USD ($) reporting_unit
Goodwill [Roll Forward]
Beginning balance	$ 736.5
Foreign currency translation adjustments and other	(14.5)
Ending balance	722.0
Sealy
Goodwill [Roll Forward]
Beginning balance	$ 521.9
North America
Goodwill [Line Items]
Number of Reporting Units \| reporting_unit	3
International
Goodwill [Line Items]
Number of Reporting Units \| reporting_unit	1
Operating Segments \| North America
Goodwill [Roll Forward]
Beginning balance	$ 574.5
Foreign currency translation adjustments and other	(5.1)
Ending balance	569.4
Operating Segments \| International
Goodwill [Roll Forward]
Beginning balance	162.0
Foreign currency translation adjustments and other	(9.4)
Ending balance	152.6
Operating Segments \| Scenario, Previously Reported \| North America
Goodwill [Roll Forward]
Beginning balance	106.2
Operating Segments \| Scenario, Previously Reported \| International
Goodwill [Roll Forward]
Beginning balance	108.4
Operating Segments \| Restatement Adjustment \| North America
Goodwill [Roll Forward]
Beginning balance	468.3
Operating Segments \| Restatement Adjustment \| International
Goodwill [Roll Forward]
Beginning balance	$ 53.6

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Reporting Unit

-URI http://asc.fasb.org/extlink&oid=6523643

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