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Consolidated Statement of Cash Flows - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash Flows From Operating Activities    
Net income (loss) $ 3,443 $ 2,554
Adjustments to reconcile net income (loss) to net cash provided by operating activities    
Depreciation, depletion and amortization 3,036 2,850
Impairments 2 (23)
Dry hole costs and leasehold impairments 68 36
Accretion on discounted liabilities 173 177
Deferred taxes (221) 262
Distributions received greater than equity losses (undistributed equity earnings) 362 94
Gain on dispositions (99) (62)
Other (394) (238)
Working capital adjustments    
Decrease (increase) in accounts and notes receivable 461 455
Decrease (increase) in inventories (77) (21)
Decrease (increase) in prepaid expenses and other current assets (149) (148)
Increase (decrease) in accounts payable (326) (282)
Increase (decrease) in taxes and other accruals (494) 87
Net cash provided by operating activities 5,785 5,741
Cash Flows From Investing Activities    
Capital expenditures and investments (3,366) (3,534)
Working capital changes associated with investing activities 24 (92)
Proceeds from asset dispositions 701 308
Net sales (purchases) of short-term investments (485) 1,257
Collection of advances/loans-related parties 62 59
Other 126 (25)
Net Cash Provided by (Used in) Investing Activities (2,938) (2,027)
Cash Flows From Financing Activities    
Issuance of debt 0 0
Repayment of debt (38) (4,952)
Issuance of company common stock (36) 42
Repurchase of company common stock (2,002) (1,146)
Dividends paid (696) (675)
Other (55) (48)
Net Cash Provided by (Used in) Financing Activities (2,827) (6,779)
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash 26 (14)
Net Change in Cash and Cash Equivalents and Restricted Cash Increase (Decrease) 46 (3,079)
Cash and Cash Equivalents and Restricted Cash at beginning of period 6,151 [1] 6,536
Cash and Cash Equivalents and Restricted Cash at end of period $ 6,197 [2] $ 3,457
[1]

Restricted cash totaling $236 million is included in the "Other assets" line of our Consolidated Balance Sheet as of December 31, 2018.

See Notes to Consolidated Financial Statements.
[2] Restricted cash of $87 million and $169 million are included in the "Prepaid expenses and other current assets" and "Other assets" lines,respectively, of our Consolidated Balance Sheet as of June 30, 2019.