Other Liabilities - Current Table (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Revenues and royalties due others	$ 526	$ 543
Accrued drilling and production costs	259	169
Joint interest prepayments received	76	71
Accrued compensation and benefits	137	239
Other accrued taxes	37	32
Bank of New York Mellon legal accrual	441	440
Other	322	304
Total other current liabilities	$ 1,798	$ 1,798