Goodwill and Other Intangible Assets - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 238.0	$ 0.0
Intangible assets, gross (excluding goodwill)	841.6	603.6
Accumulated Amortization	(1.7)	0.0
Finite-lived intangible assets, net, total	236.3	0.0
Intangible assets, net (excluding goodwill), total	839.9	603.6
In-process research and development
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	$ 603.6	$ 603.6
Minimum
Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful lives	10 years
Maximum
Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful lives	12 years