Accumulated Other Comprehensive Income (Loss) (AOCI) Reclassifications (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of products	$ (531)	$ (550)	$ (1,007)	$ (1,053)
Cost of services	(647)	(559)	(1,273)	(1,097)
Selling, general and administrative expenses	(247)	(232)	(492)	(461)
Research and development expenses	(64)	(55)	(127)	(110)
Interest expense	(46)	(26)	(89)	(47)
Income from continuing operations	91	87	145	151
Total reclassifications, net of tax	(29)	(23)	(33)	(25)
Net income	90	86	143	147
Reclassification out of Accumulated Other Comprehensive Income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of products				(1)
Cost of services	(3)	(1)	(5)	(9)
Selling, general and administrative expenses	(2)	(1)	(4)	(6)
Research and development expenses	0	(1)	(1)	(3)
Interest expense	2	1	3	3
Income from continuing operations	(3)	(2)	(7)	(16)
Total reclassifications, net of tax	1	1	3	6
Net income	(2)	(1)	(4)	(10)
Reclassification out of Accumulated Other Comprehensive Income | Actuarial losses recognized
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of products				0
Cost of services	0	1	1	3
Selling, general and administrative expenses	0	0	0	0
Research and development expenses	0	0	0	0
Interest expense	0	0	0	0
Income from continuing operations	0	1	1	3
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service benefit
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of products				(1)
Cost of services	(3)	(2)	(6)	(12)
Selling, general and administrative expenses	(2)	(1)	(4)	(6)
Research and development expenses	0	(1)	(1)	(3)
Interest expense	0	0	0	0
Income from continuing operations	(5)	(4)	(11)	(22)
Reclassification out of Accumulated Other Comprehensive Income | Cash Flow Hedging [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of products				0
Cost of services	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Research and development expenses	0	0	0	0
Interest expense	2	1	3	3
Income from continuing operations	$ 2	$ 1	$ 3	$ 3