Income Taxes - Schedule of Components of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred income tax assets
NOL carry forwards and tax credits	$ 17.7	$ 20.2
Lease liabilities	57.8	59.0
Accrued expenses	16.7	15.7
Accrued compensation	10.3	10.2
Depreciation	27.6	27.6
Other	4.8	0.2
Total deferred income tax assets	134.9	132.9
Valuation allowances	(6.8)	(9.0)
Net deferred income tax assets	128.1	123.9
Deferred income tax liabilities
ROU assets	(47.3)	(43.9)
Depreciation and amortization	(12.9)	(13.5)
Goodwill	(22.3)	(19.3)
Equity investments in unconsolidated entities	(4.7)	(5.1)
Other	(0.4)	(0.3)
Total deferred income tax liabilities	(87.6)	(82.1)
Total net deferred income tax asset	40.5	41.8
Amounts per Consolidated Balance Sheets
Deferred income tax assets	42.8	44.4
Deferred income tax liabilities (included in Other noncurrent liabilities)	(2.3)	(2.6)
Total net deferred income tax asset	$ 40.5	$ 41.8