Summary of Significant Accounting Policies - Warranty Activity (Details) - Warranty Reserves $ in Millions	9 Months Ended
Sep. 30, 2025 USD ($)
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 33.6
Liabilities assumed as a result of Mattress Firm Acquisition	25.3
Amounts accrued	16.6
Warranties charged to accrual	(16.5)
Ending balance	$ 59.0

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

No definition available.

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- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-8

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (c)(5)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-8

+ Details

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- Definition

Amount of increase in liability for standard product warranty acquired in business combination. Excludes liability for extended warranty acquired in business combination.

+ References

+ Details

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- Definition

Amount of decrease in the standard product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard product warranty. Excludes extended product warranties.

+ References

+ Details

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- Definition

Amount of increase in the standard product warranty accrual from warranties issued. Excludes extended product warranties.

+ References

+ Details

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