Summary Of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill impairment charges	$ 960.5	$ 212.3	$ 0.0
Impairment of intangible assets	$ 101.1	$ 46.0	0.0
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Goodwill and intangible asset impairments	Goodwill and intangible asset impairments
Impairment of intangible assets, finite-lived	$ 92.2	$ 0.0	0.0
Long-term debt	$ 1,394.3	$ 1,513.4
Additional Paid-in Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in stockholders' equity			3,699.0	$ 3,732.6
Accumulated Earnings (Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in stockholders' equity			$ 731.4	466.9
Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net deferred tax liability				(18.6)
Adjustment | Additional Paid-in Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in stockholders' equity				(77.8)
Adjustment | Accumulated Earnings (Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in stockholders' equity				21.4
Adjustment | Convertible Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long-term debt				$ 75.0