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CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Operating Activities |  |  |
Net Income |  | $ 3,659 | $ 2,699
Adjustments |  |  |
Depreciation, depletion and amortization |  | 4,289 | 4,194
Dry hole expense |  | 45 | 7
Distributions less than income from equity affiliates | [1] | (998) | (658)
Net before-tax gains on asset retirements and sales |  | (12) | (764)
Net foreign currency effects |  | 63 | 131
Deferred income tax provision |  | 383 | (563)
Net increase in operating working capital | [2] | (2,104) | (1,052)
Decrease in long-term receivables |  | 128 | 20
Net increase in other deferred charges | [2] | (12) | (33)
Cash contributions to employee pension plans |  | (149) | (170)
Other |  | (249) | (34)
Net Cash Provided by Operating Activities | [1],[2] | 5,043 | 3,777
Investing Activities |  |  |
Capital expenditures |  | (2,997) | (3,315)
Proceeds and deposits related to asset sales and returns of investment | [1],[2] | 111 | 1,846
Net (purchases) sales of marketable securities |  | (29) | 2
Net repayment (borrowing) of loans by equity affiliates |  | 26 | (6)
Net Cash Used for Investing Activities | [1],[2] | (2,889) | (1,473)
Financing Activities |  |  |
Net borrowings (repayments) of short-term obligations |  | 3,214 | (3,928)
Proceeds from issuance of long-term debt |  | 73 | 3,994
Repayments of long-term debt and other financing obligations |  | (2,331) | (966)
Cash dividends — common stock |  | (2,124) | (2,029)
Distributions to noncontrolling interests |  | (11) | 0
Net sales of treasury shares |  | 566 | 245
Net Cash Used for Financing Activities |  | (613) | (2,684)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash | [2] | 33 | 39
Net Change in Cash, Cash Equivalents and Restricted Cash | [2] | 1,574 | (341)
Cash, Cash Equivalents and Restricted Cash at January 1 | [2] | 5,943 | 8,414
Cash, Cash Equivalents and Restricted Cash at March 31 | [2] | $ 7,517 | $ 8,073
[1] | 2017 adjusted to conform to Accounting Standards Update 2016-15. Refer to Note 4, "Information Relating to the Consolidated Statement of Cash Flows" beginning on page 8.
[2] | 2017 adjusted to conform to Accounting Standards Update 2016-18. Refer to Note 4, "Information Relating to the Consolidated Statement of Cash Flows" beginning on page 8.

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 + Details
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