Goodwill And Acquired Intangibles (Schedule Of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,667	$ 5,839
Accumulated Amortization	3,223	2,900
Distribution Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,812	2,989
Accumulated Amortization	1,427	1,262
Product Know-How [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	553	553
Accumulated Amortization	384	354
Customer Base [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,373	1,364
Accumulated Amortization	672	599
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	626	653
Accumulated Amortization	502	485
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	303	280
Accumulated Amortization	$ 238	$ 200