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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Cash Flows from Operating Activities |  |
Net Income (Loss) | $ 1,584,000 | $ (900,000)
Items Not Requiring (Providing) Cash |  |
Depreciation, Depletion and Amortization | 1,814,000 | 1,707,000
Impairments | 88,000 | 1,878,000
Stock-Based Compensation Expenses | 66,000 | 80,000
Deferred Income Taxes | (133,000) | (208,000)
Gains (Losses) on Asset Dispositions, Net | 45,000 | 30,000
Other, Net | 13,000 | 0
Dry Hole Costs | 24,000 | 0
Mark-to-Market Commodity Derivative Contracts |  |
Total (Gains) Losses | 794,000 | (1,079,000)
Net Cash Received from (Payments for) Settlements of Commodity Derivative Contracts | (223,000) | 724,000
Other, Net | 1,000 | 0
Changes in Components of Working Capital and Other Assets and Liabilities |  |
Accounts Receivable | (494,000) | 1,191,000
Inventories | 101,000 | 85,000
Accounts Payable | 183,000 | (1,185,000)
Accrued Taxes Payable | 80,000 | (61,000)
Other Assets | (222,000) | 253,000
Other Liabilities | (57,000) | (64,000)
Changes in Components of Working Capital Associated with Investing and Financing Activities | (145,000) | 282,000
Net Cash Provided by Operating Activities | 3,429,000 | 2,673,000
Investing Cash Flows |  |
Additions to Oil and Gas Properties | (1,843,000) | (1,990,000)
Additions to Other Property, Plant and Equipment | (97,000) | (147,000)
Proceeds from Sales of Assets | 146,000 | 43,000
Changes in Components of Working Capital Associated with Investing Activities | 145,000 | (282,000)
Net Cash Used in Investing Activities | (1,649,000) | (2,376,000)
Financing Cash Flows |  |
Long-Term Debt Borrowings | 0 | 1,484,000
Long-Term Debt Repayments | (750,000) | (1,000,000)
Dividends Paid | (458,000) | (384,000)
Treasury Stock Purchased | (12,000) | (5,000)
Proceeds from Stock Options Exercised | 9,000 | 8,000
Debt Issuance Costs | 0 | (3,000)
Repayment of Finance Lease Liabilities | (18,000) | (8,000)
Net Cash Provided by (Used in) Financing Activities | (1,229,000) | 92,000
Effect of Exchange Rate Changes on Cash | 0 | 0
Increase in Cash and Cash Equivalents | 551,000 | 389,000
Cash and Cash Equivalents at Beginning Period | 3,329,000 | 2,028,000
Cash and Cash Equivalents End of Period | $ 3,880,000 | $ 2,417,000

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