Other Liabilities - Current Table (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Revenues and royalties due others	$ 543	$ 500
Accrued drilling and production costs	169	212
Joint interest prepayments received	71	169
Accrued compensation and benefits	239	264
Other accrued taxes	32	37
Bank of New York Mellon legal accrual	440	439
Minimum gathering volume commitment	0	201
Other	304	397
Total other current liabilities	$ 1,798	$ 2,219