Goodwill And Other Intangible Assets (Schedule Of Gross Carrying Amount Of Other Intangible Assets And Related Accumulated Amortization) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,013	$ 1,000
Accumulated Amortization	334	313
Indefinite-lived intangible assets	169	169
Purchased Technology And Patents [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	936	922
Accumulated Amortization	297	276
Customer Lists And Relationships [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	48	48
Accumulated Amortization	26	25
Trademarks And Tradenames [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	24	24
Accumulated Amortization	8	8
Indefinite-lived intangible assets	49	49
Licenses, Distribution Agreements And Other [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	5	6
Accumulated Amortization	3	4
Acquired IPR&D [Member]
Goodwill And Other Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 120	$ 120