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Stockholders' Equity - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Treasury stock, acquired (in shares)	0.0	0.0	0.0	0.0
Performance-based Restricted Stock Units
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares issued in connection with Mattress Firm Acquisition (in shares)	1.4	1.4	2.1	0.9
Value of treasury stock acquired	$ 94.9		$ 132.4	$ 43.8
RSU expense
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares issued in connection with Mattress Firm Acquisition (in shares)	1.4	1.4
Equity Option
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares issued in connection with Mattress Firm Acquisition (in shares)	1.4	1.4
February 2016 Program
Accumulated Other Comprehensive Income (Loss) [Line Items]
Remaining shares under share repurchase authorization	$ 774.5		$ 774.5

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