Property, Plant, and Equipment

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Property, plant, and equipment were composed of the following:



	December 31
Millions of dollars	2013		2012
Land	$	213	$	145
Buildings and property improvements	2,685		1,861
Machinery, equipment, and other	17,904		16,307
Total	20,802		18,313
Less accumulated depreciation	9,480		8,056
Net property, plant, and equipment	$	11,322	$	10,257

Classes of assets, excluding oil and natural gas investments, are depreciated over the following useful lives:



	Buildings and Property Improvements
	2013	2012
1 - 10 years	13%	14%
11 - 20 years	43%	46%
21 - 30 years	20%	14%
31 - 40 years	24%	26%



	Machinery, Equipment, and Other
	2013	2012
1 - 5 years	22%	20%
6 - 10 years	72%	74%
11 - 20 years	6%	6%

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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