Intangible Assets Including Goodwill: (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Intangible asset balances by major asset class:
Gross Carrying Amount	$ 6,967		$ 6,930
Accumulated Amortization	(3,594)		(3,059)
Net Carrying Amount	3,373		3,871
Capitalized software
Intangible asset balances by major asset class:
Gross Carrying Amount	1,412		1,494
Accumulated Amortization	(689)		(699)
Net Carrying Amount	723		794
Client relationships
Intangible asset balances by major asset class:
Gross Carrying Amount	2,219		2,148
Accumulated Amortization	(1,204)		(977)
Net Carrying Amount	1,015		1,171
Completed technology
Intangible asset balances by major asset class:
Gross Carrying Amount	2,941		2,910
Accumulated Amortization	(1,497)		(1,224)
Net Carrying Amount	1,444		1,687
In-process R&D
Intangible asset balances by major asset class:
Gross Carrying Amount	2		13
Net Carrying Amount	2		13
Patents/trademarks
Intangible asset balances by major asset class:
Gross Carrying Amount	376		358
Accumulated Amortization	(199)		(154)
Net Carrying Amount	176		204
Other intangible assets
Intangible asset balances by major asset class:
Gross Carrying Amount	18	[1]	7	[1]
Accumulated Amortization	(6)	[1]	(5)	[1]
Net Carrying Amount	$ 13	[1]	$ 2	[1]

[1] Other intangibles are primarily acquired proprietary and non-proprietary business processes, methodologies and systems.