000100 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 010000 - Statement - Consolidated Statements of Income and Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 020000 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 020100 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 030000 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 060100 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 060200 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 060300 - Disclosure - Net Income Per Share link:presentationLink link:calculationLink link:definitionLink 060400 - Disclosure - Supplemental Cash Flow Information link:presentationLink link:calculationLink link:definitionLink 060500 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 060600 - Disclosure - Asset Retirement Obligations link:presentationLink link:calculationLink link:definitionLink 060700 - Disclosure - Exploratory Well Costs link:presentationLink link:calculationLink link:definitionLink 060800 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 060900 - Disclosure - Pension and Postretirement Benefits link:presentationLink link:calculationLink link:definitionLink 061000 - Disclosure - Long-Term Debt link:presentationLink link:calculationLink link:definitionLink 061100 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 061200 - Disclosure - Risk Management Activities link:presentationLink link:calculationLink link:definitionLink 061300 - Disclosure - Divestitures link:presentationLink link:calculationLink link:definitionLink 080200 - Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 080300 - Disclosure - Net Income Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 080400 - Disclosure - Supplemental Cash Flow Information (Tables) link:presentationLink link:calculationLink link:definitionLink 080500 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 080600 - Disclosure - Asset Retirement Obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 080700 - Disclosure - Exploratory Well Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 081100 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 081200 - Disclosure - Risk Management Activities (Tables) link:presentationLink link:calculationLink link:definitionLink 090200 - Disclosure - Stock-Based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 090300 - Disclosure - Net Income Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 090400 - Disclosure - Supplemental Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink 090500 - Disclosure - Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 090600 - Disclosure - Asset Retirement Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 090700 - Disclosure - Exploratory Well Costs (Details) link:presentationLink link:calculationLink link:definitionLink 090900 - Disclosure - Pension and Postretirement Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 091000 - Disclosure - Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 091100 - Disclosure - Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 091200 - Disclosure - Risk Management Activities (Details) link:presentationLink link:calculationLink link:definitionLink 091300 - Disclosure - Divestitures (Details) link:presentationLink link:calculationLink link:definitionLink