Goodwill and Intangible Assets (Amortization Expense) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible asset amortization expense	$ 351,600,000	$ 399,200,000	$ 702,800,000	$ 804,700,000
IPR&D intangible asset impairment charges	0	0	0	29,500,000
Total intangible asset amortization expense (including impairment charges)	$ 351,600,000	439,600,000	$ 702,800,000	874,600,000
Impairment of Intangible Assets, Finite-lived		$ 40,400,000		$ 40,400,000