Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Accumulated Other Comprehensive Income [Line Items]
Cost of products	$ 550	$ 532	$ 1,053	$ 977
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(197)
Other comprehensive income (loss) before reclassifications			(15)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(10)
Net current period other comprehensive income			(25)
Accumulated other comprehensive income (loss), ending balance	(222)		(222)
Cost of services	559	503	1,097	987
Selling, general and administrative expenses	232	195	461	386
Research and development expenses	55	49	110	95
Interest Expense	26	8	47	17
Income from continuing operations	87	89	151	149
Income tax expense (benefit)	(23)	(28)	(25)	(35)
Total reclassifications, net of tax	86	102	147	152
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(166)
Other comprehensive income (loss) before reclassifications			(53)
Net current period other comprehensive income			(53)
Accumulated other comprehensive income (loss), ending balance	(219)		(219)
Employee Benefit Plan Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(22)
Other comprehensive income (loss) before reclassifications			31
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(12)
Net current period other comprehensive income			19
Accumulated other comprehensive income (loss), ending balance	(3)		(3)
Changes in Fair Value of Effective Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(10)
Other comprehensive income (loss) before reclassifications			4
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			2
Net current period other comprehensive income			6
Accumulated other comprehensive income (loss), ending balance	(4)		(4)
Changes in Fair Value of Available for Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			1
Other comprehensive income (loss) before reclassifications			3
Net current period other comprehensive income			3
Accumulated other comprehensive income (loss), ending balance	4		4
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income [Line Items]
Cost of products			(1)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Cost of services	(1)		(9)
Selling, general and administrative expenses	(1)		(6)
Research and development expenses	(1)		(3)
Interest Expense	1		3
Income from continuing operations	(2)		(16)
Income tax expense (benefit)	1		(6)
Total reclassifications, net of tax	(1)		(10)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service benefit
Accumulated Other Comprehensive Income [Line Items]
Cost of products			(1)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Cost of services	(2)		(12)
Selling, general and administrative expenses	(1)		(6)
Research and development expenses	(1)		(3)
Income from continuing operations	(4)		(22)
Reclassification out of Accumulated Other Comprehensive Income | Cash Flow Hedging [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Interest Expense	1		3
Income from continuing operations	1		3
Reclassification out of Accumulated Other Comprehensive Income | Actuarial losses recognized
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Cost of services	1		3
Income from continuing operations	$ 1		$ 3