Divestitures, Investment Activities, and Goodwill - Schedule of Accumulated Impairment Losses of Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, gross	$ 2,034.6	$ 2,125.6	$ 3,030.6
Accumulated impairment losses	0.0	(29.6)	(464.0)
Goodwill, net	$ 2,034.6	$ 2,096.0	$ 2,566.6