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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.