Intangible Assets Including Goodwill (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
Intangible asset balances by major asset class:
Gross Carrying Amount	$ 5,537		$ 5,537		$ 5,649
Accumulated Amortization	(2,332)		(2,332)		(2,161)
Net Carrying Amount	3,205		3,205		3,488
Net carrying amount increase/(decrease)			(283)
Intangible asset amortization expense	309	284	619	570
Intangible assets retired and fully amortized			450
Capitalized software
Intangible asset balances by major asset class:
Gross Carrying Amount	1,524		1,524		1,558
Accumulated Amortization	(706)		(706)		(726)
Net Carrying Amount	818		818		831
Client-related
Intangible asset balances by major asset class:
Gross Carrying Amount	1,614		1,614		1,709
Accumulated Amortization	(650)		(650)		(647)
Net Carrying Amount	963		963		1,062
Completed technology
Intangible asset balances by major asset class:
Gross Carrying Amount	2,122		2,122		2,111
Accumulated Amortization	(856)		(856)		(688)
Net Carrying Amount	1,266		1,266		1,422
In-process R and D
Intangible asset balances by major asset class:
Gross Carrying Amount	22		22		21
Accumulated Amortization	(1)		(1)		0
Net Carrying Amount	21		21		21
Patents/trademarks
Intangible asset balances by major asset class:
Gross Carrying Amount	216		216		211
Accumulated Amortization	(89)		(89)		(71)
Net Carrying Amount	127		127		140
Other intangible assets
Intangible asset balances by major asset class:
Gross Carrying Amount	39		39		39
Accumulated Amortization	(29)		(29)		(28)
Net Carrying Amount	$ 9		$ 9		$ 11