Goodwill and Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible asset amortization expense	$ 574.7	$ 584.0	$ 1,772.9	$ 1,778.5
Goodwill impairment charge	0.0	0.0	0.0	32.0
Intangible asset disposal & impairment charges	0.0	0.0	102.0	0.0
Total intangible asset amortization expense (including disposal & impairment charges)	$ 574.7	$ 584.0	$ 1,874.9	$ 1,810.5