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No definition available.

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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

Noncash charitable contributions made by the entity during the period.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Quarterly Financial Data (unaudited) Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effect of Fourth Quarter Events [Line Items]
Customer-related charges			$ 29.8	$ 21.2	$ 14.4
Donation of common stock	$ 8.9		$ 8.9	$ 0.0	$ 0.0
Restructuring costs		$ 9.1
Mattress PAL
Effect of Fourth Quarter Events [Line Items]
Customer-related charges	$ 29.8
Innovative Mattress Solutions, LLC (IMS)
Effect of Fourth Quarter Events [Line Items]
Customer-related charges		21.2
Other Restructuring
Effect of Fourth Quarter Events [Line Items]
Restructuring charges		4.7
Professional Fees
Effect of Fourth Quarter Events [Line Items]
Restructuring charges		2.9
Acquisition-related Costs
Effect of Fourth Quarter Events [Line Items]
Restructuring charges		$ 1.5