0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED BALANCE SHEETS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - New Accounting Principles and Recent Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Revenue from Contracts with Customers link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Property, Plant and Equipment link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Financing Arrangements and Debt link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Other Financial Information link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Asset Retirement Obligations link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Employee and Retiree Benefit Plans link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Incentive Plans link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Net Income Per Common Share link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Financial Instruments and Risk Management link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Accumulated Other Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Environmental and Other Contingencies link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Common Stock Issued and Outstanding link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Business Segments link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - New Accounting Principles and Recent Accounting Pronouncements (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Revenue from Contracts with Customers (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Property, Plant and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Other Financial Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Asset Retirement Obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Employee and Retiree Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Incentive Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Net Income Per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Financial Instruments and Risk Management (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Accumulated Other Comprehensive Loss (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Common Stock Issued and Outstanding (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Business Segments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Revenue from Contracts with Customers - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Revenue from Contracts with Customers - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Revenue from Contracts with Customers - Current Long-Term Contracts Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Property, Plant and Equipment - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Property, Plant and Equipment - Net Changes in Capitalized Exploratory Well Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Property, Plant and Equipment - Aging of Capitalized Exploratory Well Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Financing Arrangements and Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Other Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Asset Retirement Obligations - Schedule of Reconciliation of Beginning and Ending Aggregate Carrying Amount of Asset Retirement Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Asset Retirement Obligations - Schedule of Classification of Asset of Asset Retirement Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Employee and Retiree Benefit Plans - Schedule of Components of Net Periodic Benefit Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Employee and Retiree Benefit Plans - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Incentive Plans - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Incentive Plans - Schedule of Awards Granted (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Incentive Plans - Schedule of Share-Based Plans, Amounts Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Net Income Per Common Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Financial Instruments and Risk Management - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Financial Instruments and Risk Management - Schedule of Crude Oil Derivative Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Financial Instruments and Risk Management - Schedule of Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Financial Instruments and Risk Management - Schedule of Carrying Value of Assets and Liabilities Recorded at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Assets and Liabilities Measured at Fair Value - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Accumulated Other Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Environmental and Other Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Common Stock Issued and Outstanding - Schedule of Number of Shares of Common Stock Issued and Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Common Stock Issued and Outstanding - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Business Segments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Business Segments - Schedule of Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink