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Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Gross Cost	$ 19,374	$ 17,008
Accumulated Depreciation	(16,280)	(14,721)
Net Cost	3,094	2,287
Land [Member]
Property, Plant and Equipment [Line Items]
Gross Cost	81	73
Net Cost	81	73
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross Cost	891	788
Accumulated Depreciation	(479)	(412)
Net Cost	412	376
Facilities and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross Cost	3,074	2,713
Accumulated Depreciation	(2,782)	(2,474)
Net Cost	292	239
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross Cost	14,529	12,808
Accumulated Depreciation	(12,569)	(11,415)
Net Cost	1,960	1,393
Computer and R&D Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross Cost	397	362
Accumulated Depreciation	(351)	(324)
Net Cost	46	38
Other Tangible Assets [Member]
Property, Plant and Equipment [Line Items]
Gross Cost	118	105
Accumulated Depreciation	(99)	(96)
Net Cost	19	9
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross Cost	284	159
Net Cost	$ 284	$ 159

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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+ References

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