Accumulated Other Comprehensive Income Reclassifications (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of products	$ 476	$ 503
Cost of services	626	538
Selling, general and administrative expenses	245	229
Research and development expenses	63	55
Interest expense	43	21
Income from continuing operations	54	64
Income tax expense (benefit)	(4)	(2)
Total reclassifications, net of tax	53	61
Reclassification out of Accumulated Other Comprehensive Income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of products		(1)
Cost of services	(2)	(8)
Selling, general and administrative expenses	(2)	(5)
Research and development expenses	(1)	(2)
Interest expense	1	2
Income from continuing operations	(4)	(14)
Income tax expense (benefit)	(2)	(5)
Total reclassifications, net of tax	(2)	(9)
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	1	2
Selling, general and administrative expenses	0	0
Research and development expenses	0	0
Interest expense	0	0
Income from continuing operations	1	2
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)	(10)
Selling, general and administrative expenses	(2)	(5)
Research and development expenses	(1)	(2)
Interest expense	0	0
Income from continuing operations	(6)	(18)
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
Selling, general and administrative expenses	0	0
Research and development expenses	0	0
Interest expense	1	2
Income from continuing operations	$ 1	$ 2