Segment Information (Reconciliation Of Segment Information To Total Consolidated Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	$ 4,400.1	$ 2,588.2
Revenues	4,430.3	2,619.2
Amortization of Intangible Assets	(684.4)	(351.2)
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	(83.4)	0.0
Research and development	(184.1)	(114.2)
Litigation settlements and other contingencies, net	(22.9)	(1.8)
(Loss) earnings from operations	(266.2)	184.7
Operating Segment
Segment Reporting Information [Line Items]
(Loss) earnings from operations	2,211.8	1,135.0
Reconciling items:
Segment Reporting Information [Line Items]
Amortization of Intangible Assets	(684.4)	(351.2)
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	(83.4)	0.0
Research and development	(184.1)	(114.2)
Litigation settlements and other contingencies, net	(22.9)	(1.8)
Other One-Time Nonoperating Expense	(993.4)	(164.2)
Corporate / Other
Segment Reporting Information [Line Items]
Corporate costs	509.8	318.9
Developed Markets | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	2,571.6	1,986.4
(Loss) earnings from operations	1,285.4	989.0
Greater China | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	591.9	15.1
(Loss) earnings from operations	404.9	(0.4)
JANZ | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	481.9	243.2
(Loss) earnings from operations	184.2	51.6
Emerging Markets | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	754.7	343.5
(Loss) earnings from operations	337.3	94.8
Other Revenues
Segment Reporting Information [Line Items]
Revenues	$ 30.2	$ 31.0