Segment Information (Reconciliation Of Segment Information To Total Consolidated Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	$ 3,738.0	$ 3,933.9	$ 11,177.4	$ 11,562.5
Revenues	3,751.2	3,941.9	11,211.2	11,589.6
Amortization of Intangible Assets	(574.7)	(584.0)	(1,772.9)	(1,778.5)
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0.0	0.0	(102.0)	0.0
Research and development	(198.4)	(211.2)	(602.2)	(602.4)
Litigation settlements and other contingencies, net	(31.5)	26.1	(239.3)	36.5
Earnings from operations	225.9	451.7	189.9	1,220.7
Other Research and Development Expense		(1.0)		(11.2)
Goodwill, Impairment Loss			(321.0)	0.0
Other Research and Development Refund	0.0		1.7
Operating Segment
Segment Reporting Information [Line Items]
Earnings from operations	1,715.4	1,840.6	5,052.9	5,435.0
Reconciling items:
Segment Reporting Information [Line Items]
Amortization of Intangible Assets	(574.7)	(584.0)	(1,772.9)	(1,778.5)
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			(102.0)	(32.0)
Research and development	(198.4)	(211.2)	(602.2)	(602.4)
Litigation settlements and other contingencies, net	(31.5)	26.1	(239.3)	36.5
Other One-Time Nonoperating Expense	(303.6)	(207.3)	(702.3)	(620.4)
Corporate / Other
Segment Reporting Information [Line Items]
Corporate costs	381.3	411.5	1,125.0	1,206.4
Developed Markets Segment
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss			0.0
Developed Markets Segment | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	2,298.7	2,408.5	6,783.3	6,932.7
Earnings from operations	1,042.1	1,087.0	2,963.1	3,085.4
Greater China
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss			0.0
Greater China | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	561.8	548.4	1,644.7	1,645.1
Earnings from operations	362.2	354.6	1,077.9	1,098.6
Japan, Australia and New Zealand Segment | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	344.3	334.5	1,011.7	1,052.2
Earnings from operations	102.9	125.4	291.5	387.5
Emerging Markets Segment
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss			0.0
Emerging Markets Segment | Operating Segment
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Net	533.2	642.5	1,737.7	1,932.5
Earnings from operations	$ 208.2	$ 273.6	$ 720.4	$ 863.5