Revenue Recognition and Accounts Receivable (Accounts Receivable, Net) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Revenue Recognition And Accounts Receivable [Line Items]
Trade receivables, net	$ 3,231.0		$ 3,231.0		$ 3,243.8
Other receivables	507.5		507.5		570.7
Accounts receivable, net	3,738.5		3,738.5		3,814.5
Gross sales	6,497.2	$ 6,862.9	19,289.2	$ 21,069.9
Chargebacks	(1,348.3)	(1,553.1)	(4,073.2)	(4,731.5)
Accrued Sales Allowances	(952.7)	(1,021.8)	(2,905.9)	(3,303.0)
Revenue from Contract with Customer, Returns	(55.7)	(73.4)	(174.4)	(238.7)
Medicaid and other governmental rebates	(206.6)	(147.2)	(573.2)	(445.7)
Sales Revenue, Gross to net adjustments	(2,563.3)	$ (2,795.5)	(7,726.7)	$ (8,718.9)
Variable Consideration
Revenue Recognition And Accounts Receivable [Line Items]
Trade receivables, net	1,594.5		1,594.5		1,798.7
Other receivables	921.2		921.2		888.8
Accounts receivable, net	$ 2,515.7		$ 2,515.7		$ 2,687.5