Income Taxes - Schedule of Components of Net Deferred Taxes Arising from Temporary Differences (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Nondeductible accruals	$ 14.4	$ 15.0
Stock-based compensation	44.3	55.0
Lease liabilities	143.9	161.2
Net operating loss carryforward	462.1	395.6
Allowance for credit losses	10.7	9.2
Accrued compensation	27.6	35.4
Capitalized research & development costs	84.5	83.6
Intangible assets	12.1	6.7
Other	5.9	5.4
Total deferred tax assets	805.5	767.1
Deferred tax liabilities:
Operating lease right-of-use assets	(110.8)	(132.2)
Property and equipment	(26.6)	(37.5)
Total deferred tax liabilities	(137.4)	(169.7)
Less: valuation allowance	(664.9)	(594.2)
Net deferred tax assets	$ 3.2	$ 3.2

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