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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Cash Flows from Operating Activities    
Net income (loss) $ 191 $ (609)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities    
Depreciation, depletion, and amortization 1,993 2,152
Deferred income taxes 27 (172)
Dry hole expense and impairments of unproved properties 149 1,466
Impairments 147 383
(Gains) losses on divestitures, net (28) (1,009)
Total (gains) losses on derivatives, net 473 (115)
Operating portion of net cash received (paid) in settlement of derivative instruments (234) 5
Other 139 159
Changes in assets and liabilities    
(Increase) decrease in accounts receivable (91) 7
Increase (decrease) in accounts payable and other current liabilities 91 (278)
Other items, net (202) (9)
Net cash provided by (used in) operating activities 2,655 1,980
Cash Flows from Investing Activities    
Additions to properties and equipment (3,277) (2,296)
Divestitures of properties and equipment and other assets 384 3,460
Other, net (163) 55
Net cash provided by (used in) investing activities (3,056) 1,219
Cash Flows from Financing Activities    
Borrowings, net of issuance costs 1,333 159
Repayments of debt (764) (31)
Financing portion of net cash received (paid) for derivative instruments 55 (125)
Increase (decrease) in outstanding checks 34 (32)
Dividends paid (254) (56)
Repurchases of common stock (1,973) (37)
Issuances of common stock 6 0
Distributions to noncontrolling interest owners (238) (214)
Payments of future hard-minerals royalty revenues conveyed (25) (25)
Other financing activities 0 (11)
Net cash provided by (used in) financing activities (1,826) (372)
Effect of exchange rate changes on cash, cash equivalents, restricted cash, and restricted cash equivalents (15) (1)
Net Increase (Decrease) in Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents (2,242) 2,826
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents at Beginning of Period 4,674 3,308
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents at End of Period $ 2,432 $ 6,134