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Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
CASH FLOW FROM OPERATING ACTIVITIES |  |  |
Net income (loss) | $ 1,311 | $ (574) | $ (7,829)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Income from discontinued operations |  | (428) | (317)
Depreciation, depletion and amortization of assets | 4,002 | 4,268 | 4,544
Deferred income tax benefit | (719) | (517) | (1,372)
Other noncash charges to income | 222 | 121 | 159
Asset impairments and related items | 545 | 665 | 9,684
Gain on sale of equity investments and other assets | (667) | (202) | (101)
Undistributed earnings from equity investments | (68) | 3 | 6
Dry hole expenses | 51 | 33 | 10
Changes in operating assets and liabilities: |  |  |
Decrease (increase) in receivables | (158) | (1,091) | 1,431
Decrease (increase) in inventories | (349) | 17 | (24)
Decrease in other current assets | 39 | 65 | 33
(Decrease) increase in accounts payable and accrued liabilities | 43 | 603 | (1,989)
(Decrease) increase in current domestic and foreign income taxes | 64 | 17 | (331)
Other operating, net | 680 | (461) | (650)
Operating cash flow from continuing operations | 4,996 | 2,519 | 3,254
Operating cash flow from discontinued operations, net of taxes |  | 864 | 97
Net cash provided by operating activities | 4,996 | 3,383 | 3,351
CASH FLOW FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (3,599) | (2,717) | (5,272)
Change in capital accrual | 122 | (114) | (592)
Payments for purchases of assets and businesses | (1,064) | (2,044) | (109)
Sales of equity investments and assets, net | 1,403 | 302 | 819
Other, net | (76) | (169) | (269)
Net cash used by investing activities | (3,214) | (4,742) | (5,423)
CASH FLOW FROM FINANCING ACTIVITIES |  |  |
Proceeds from long-term debt |  | 4,203 | 1,478
Payments of long-term debt |  | (2,710) |
Change in restricted cash |  | 1,193 | 2,826
Proceeds from issuance of common stock | 28 | 36 | 37
Purchases of treasury stock | (25) | (22) | (593)
Cash dividends paid | (2,346) | (2,309) | (2,264)
Net cash provided (used) by financing activities | (2,343) | 391 | 1,484
Decrease in cash and cash equivalents | (561) | (968) | (588)
Cash and cash equivalents - beginning of year | 2,233 | 3,201 | 3,789
Cash and cash equivalents - end of year | $ 1,672 | $ 2,233 | $ 3,201

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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