Income Taxes - Schedule of Components of Company's Net Deferred Tax Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Non-current deferred tax liabilities:
Intangible assets	$ 631.6	$ 440.2
Fixed assets	21.1	20.0
Right-of-use assets	48.3	47.7
Net unrealized holding (loss)/gain on available-for-sale securities	(0.4)
Total non-current deferred tax liabilities	720.4	523.1
Non-current deferred tax assets:
Deferred compensation	67.4	66.4
Accruals and reserves	12.5	15.7
Lease liabilities	54.6	53.3
Net operating loss carryforwards and other carryforwards	3.0	1.9
Valuation allowance for deferred tax assets	(1.1)	(1.0)
Total non-current deferred tax assets	136.4	136.3
Net non-current deferred tax liability	584.0	386.8
Accounting Standards Update 2014-09
Non-current deferred tax liabilities:
Deferred Tax Liabilities, Other	$ 19.8	$ 15.2