Revenue Recognition and Accounts Receivable Variable Consideration (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Gross sales	$ 6,336.0	$ 6,497.2	$ 18,894.5	$ 19,289.2
Chargebacks	(1,283.9)	(1,348.3)	(3,810.7)	(4,073.2)
Rebates, promotional programs and other sales allowances	(1,042.7)	(952.7)	(3,131.5)	(2,905.9)
Returns	(90.3)	(55.7)	(220.7)	(174.4)
Medicaid and other governmental rebates	(181.1)	(206.6)	(554.2)	(573.2)
Sales Revenue, Gross to net adjustments	(2,598.0)	(2,563.3)	(7,717.1)	(7,726.7)
Net sales	$ 3,738.0	$ 3,933.9	$ 11,177.4	$ 11,562.5