Asset Impairments (Tables)

3 Months Ended

Mar. 31, 2015

Asset Impairments [Abstract]

Summary of details of impairment of long-lived assets

Pre-tax (non-cash) asset impairment charges were as follows:

	Three Months Ended March 31,
(millions)	2015		2014
Deepwater Gulf of Mexico	3		—
Eastern Mediterranean	24		—
North Sea	—		92
Non-Core US Property	—		5
Total	$	27	$	97