CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities
Net income (loss)	$ (2,356)	$ (5,288)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation, depletion, and amortization	3,202	3,581
Deferred income taxes	(1,121)	(2,627)
Dry hole expense and impairments of unproved properties	300	1,993
Impairments	61	3,571
(Gains) losses on divestitures, net	516	1,003
Loss on early extinguishment of debt	124	0
Total (gains) losses on derivatives, net	634	123
Operating portion of net cash received (paid) in settlement of derivative instruments	229	251
Other	256	219
Changes in assets and liabilities
(Increase) decrease in accounts receivable	810	23
Increase (decrease) in accounts payable and accrued expenses	(833)	(573)
Other items, net	55	800
Net cash provided by (used in) operating activities	1,877	(2,134)
Cash Flows from Investing Activities
Additions to properties and equipment	(2,618)	(4,861)
Divestitures of properties and equipment and other assets	1,281	1,248
Other, net	81	(83)
Net cash provided by (used in) investing activities	(1,256)	(3,696)
Cash Flows from Financing Activities
Borrowings, net of issuance costs	5,840	4,810
Repayments of debt	(6,023)	(4,024)
Financing portion of net cash received (paid) for derivative instruments	(639)	(44)
Increase (decrease) in outstanding checks	(126)	(103)
Dividends paid	(78)	(415)
Repurchase of common stock	(32)	(38)
Issuance of common stock, including tax benefit on share-based compensation awards	2,188	21
Distributions to noncontrolling interest owners	(260)	(208)
Proceeds from conveyance of future hard minerals royalty revenues, net of transaction costs	413	0
Payments of future hard minerals royalty revenues conveyed	(25)	0
Net cash provided by (used in) financing activities	2,421	534
Effect of Exchange Rate Changes on Cash	(1)	(1)
Net Increase (Decrease) in Cash and Cash Equivalents	3,041	(5,297)
Cash and Cash Equivalents at Beginning of Period	939	7,369
Cash and Cash Equivalents at End of Period	3,980	2,072
Subsidiary Equity Transactions [Member]
Cash Flows from Financing Activities
Sale of subsidiary units	1,163	187
Equity Component of 7.50% Tangible Equity Units [Member]
Cash Flows from Financing Activities
Sale of subsidiary units	0	348
Tronox Litigation [Member] | Judicial Ruling [Member]
Changes in assets and liabilities
Tronox-related contingent liability	$ 0	$ (5,210)