Acquired Intangible Assets (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	$ 884		$ 884		$ 883
Finite-Lived Intangible Assets, Accumulated Amortization	(613)		(613)		(564)
Finite-Lived Intangible Assets, Net	271		271		319
Increase in amortization expense due to reduction in useful life as a result of adverse economic conditions			3
Acquired finite-lived intangible asset amortization expense	24	23	49	46
Total Acquired Intangible Assets
Intangible assets, Gross Carrying Amount	936		936		935
Total intangible assets, Net	323		323		371
Estimated amortization expense of acquired finite-lived intangible asset
2011 (remaining six months)			45
2012			69
2013			51
2014			39
2015			28
2016			21
Thereafter			18
Total			271
Customer Contracts and Relationships
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	743		743		743
Finite-Lived Intangible Assets, Accumulated Amortization	(529)		(529)		(488)
Finite-Lived Intangible Assets, Net	214		214		255
Patents and Developed Technology
Finite-Lived Intangible Assets:
Finite-Lived Intangible Assets, Gross Carrying Amount	141		141		140
Finite-Lived Intangible Assets, Accumulated Amortization	(84)		(84)		(76)
Finite-Lived Intangible Assets, Net	57		57		64
Vyvx Trade Name
Indefinite-Lived Intangible Assets:
Indefinite-Lived Intangible Assets, Gross Carrying Amount	32		32		32
Indefinite-Lived Intangible Assets, Net	32		32		32
Wireless Licenses
Indefinite-Lived Intangible Assets:
Indefinite-Lived Intangible Assets, Gross Carrying Amount	20		20		20
Indefinite-Lived Intangible Assets, Net	$ 20		$ 20		$ 20