Goodwill and Other Intangible Assets - Goodwill by Reportable Business Segment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, Beginning balance	$ 723.0	$ 732.7
Goodwill resulting from acquisitions	7.8
Foreign currency translation adjustments	1.5	(9.7)
Goodwill, Ending balance	732.3	723.0
North America \| Tempur Sealy U.S.
Goodwill [Roll Forward]
Goodwill, Beginning balance	571.1	576.6
Goodwill resulting from acquisitions	2.4
Foreign currency translation adjustments	3.1	(5.5)
Goodwill, Ending balance	576.6	571.1
International \| Sealy Canada
Goodwill [Roll Forward]
Goodwill, Beginning balance	151.9	156.1
Goodwill resulting from acquisitions	5.4
Foreign currency translation adjustments	(1.6)	(4.2)
Goodwill, Ending balance	$ 155.7	$ 151.9

Goodwill, Translation Adjustments and Other

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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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

No definition available.

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