Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Supplemental Cash Flow Information [Abstract]
(Increase) decrease in receivables for property sales	$ 0	$ 2
(Increase) decrease in accrued capital expenditures	(4)	20
(Increase) decrease in asset retirement costs	$ (4)	$ 0

The increase (decrease) during the reporting period in accrued costs that represent future cash outflows to pay for purchases of fixed assets.

No definition available.

+ Details

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- Definition

The increase (decrease) during the reporting period in accrued costs that represent future cash outlays for restoration and reclamation of oil and gas producing properties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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- Definition

Amount of increase (decrease) in receivables classified as other.

+ References

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- References

No definition available.

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