000100 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 010000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) link:presentationLink link:calculationLink link:definitionLink 020000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) link:presentationLink link:calculationLink link:definitionLink 020100 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 030000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) link:presentationLink link:calculationLink link:definitionLink 030100 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 040000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) link:presentationLink link:calculationLink link:definitionLink 060100 - Disclosure - Nature of Business link:presentationLink link:calculationLink link:definitionLink 060200 - Disclosure - Basis of Presentation of Interim Consolidated Financial Statements link:presentationLink link:calculationLink link:definitionLink 060300 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 060400 - Disclosure - Asset Retirement Obligations link:presentationLink link:calculationLink link:definitionLink 060500 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 060600 - Disclosure - Derivative Contracts link:presentationLink link:calculationLink link:definitionLink 060700 - Disclosure - Restructuring Costs link:presentationLink link:calculationLink link:definitionLink 060800 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 060900 - Disclosure - Contingencies link:presentationLink link:calculationLink link:definitionLink 061000 - Disclosure - Share-Based Compensation link:presentationLink link:calculationLink link:definitionLink 061100 - Disclosure - Employee Benefits link:presentationLink link:calculationLink link:definitionLink 061200 - Disclosure - Operations by Line of Business link:presentationLink link:calculationLink link:definitionLink 070200 - Disclosure - Basis of Presentation of Interim Consolidated Financial Statements (Policies) link:presentationLink link:calculationLink link:definitionLink 080200 - Disclosure - Basis of Presentation of Interim Consolidated Financial Statements (Tables) link:presentationLink link:calculationLink link:definitionLink 080300 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 080400 - Disclosure - Asset Retirement Obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 080500 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 080600 - Disclosure - Derivative Contracts (Tables) link:presentationLink link:calculationLink link:definitionLink 080700 - Disclosure - Restructuring Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 080800 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 081000 - Disclosure - Share-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 081100 - Disclosure - Employee Benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 081200 - Disclosure - Operations by Line of Business (Tables) link:presentationLink link:calculationLink link:definitionLink 090200 - Disclosure - Basis of Presentation of Interim Consolidated Financial Statements (Details) link:presentationLink link:calculationLink link:definitionLink 090300 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 090400 - Disclosure - Asset Retirement Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 090500 - Disclosure - Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 090600 - Disclosure - Derivative Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 090700 - Disclosure - Restructuring Costs (Details) link:presentationLink link:calculationLink link:definitionLink 090800 - Disclosure - Debt (Details) link:presentationLink link:calculationLink link:definitionLink 090900 - Disclosure - Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 091000 - Disclosure - Share-Based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 091100 - Disclosure - Employee Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 091200 - Disclosure - Operations by Line of Business (Details) link:presentationLink link:calculationLink link:definitionLink