Intangible Assets (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 593	$ 602
Accumulated Amortization	407	380
Net Carrying Amount	186	222
Indefinite-lived Intangible Assets [Line Items]
Unamortized Intangible Assets, Goodwill, Gross Carrying Amount	1,127	1,137
Trademarks
Indefinite-lived Intangible Assets [Line Items]
Unamortized Intangible Assets, Trademarks, Gross Carrying Amount	553	552
License agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	276	280
Accumulated Amortization	170	151
Net Carrying Amount	106	129
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	264	268
Accumulated Amortization	202	196
Net Carrying Amount	62	72
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	53	54
Accumulated Amortization	35	33
Net Carrying Amount	$ 18	$ 21