Goodwill and Other Identifiable Intangible Assets (Identifiable Intangible Assets with Finite Lives) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,637	$ 1,604
Accumulated Amortization	(891)	(795)
Net	746	809
Acquired technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	515	511
Accumulated Amortization	(340)	(308)
Net	175	203
Customer-related intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	968	945
Accumulated Amortization	(467)	(412)
Net	501	533
Tradenames [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	119	116
Accumulated Amortization	(55)	(50)
Net	64	66
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	35	32
Accumulated Amortization	(29)	(25)
Net	$ 6	$ 7