Goodwill and Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible asset amortization expense	$ 597.2	$ 591.2	$ 1,198.2	$ 1,194.5
Goodwill impairment charge	0.0	0.0	0.0	32.0
Intangible asset disposal & impairment charges	102.0	0.0	102.0	0.0
Total intangible asset amortization expense (including disposal & impairment charges)	$ 699.2	$ 591.2	$ 1,300.2	$ 1,226.5