Properties and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment, Gross [Abstract]

4. Properties and Equipment

The following summarizes the cost of properties and equipment by segment at December 31:



millions	2014		2013
Oil and gas exploration and production ⁽¹⁾	$	63,674	$	61,302
Midstream	8,647		7,285
Marketing	—		9
Other	2,786		2,648
Total properties and equipment	$	75,107	$	71,244

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⁽¹⁾	Includes costs associated with unproved properties of $5.1 billion at December 31, 2014, and $6.9 billion at December 31, 2013.

- 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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