00090 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 00100 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 00105 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00200 - Statement - Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 00300 - Statement - Consolidated Statement of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 00305 - Statement - Consolidated Statement of Stockholders' Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00400 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 00500 - Statement - Consolidated Statements of Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Organization and Nature of Operations link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Exploratory Well Costs link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Disclosures About Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Long-term Debt link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - Derivative Financial Instruments link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Asset Retirement Obligations link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - Interest and Other Income link:presentationLink link:calculationLink link:definitionLink 11401 - Disclosure - Other Expense link:presentationLink link:calculationLink link:definitionLink 11501 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 11601 - Disclosure - Net Income (Loss) Per Share Attributable To Common Stockholders link:presentationLink link:calculationLink link:definitionLink 11701 - Disclosure - Geographic Operating Segment Information link:presentationLink link:calculationLink link:definitionLink 11801 - Disclosure - Impairment link:presentationLink link:calculationLink link:definitionLink 11901 - Disclosure - Volumetric Production Payments link:presentationLink link:calculationLink link:definitionLink 12001 - Disclosure - Insurance Claims link:presentationLink link:calculationLink link:definitionLink 12101 - Disclosure - Discontinued Operations link:presentationLink link:calculationLink link:definitionLink 12201 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 30803 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:calculationLink link:definitionLink 31503 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 32103 - Disclosure - Discontinued Operations (Tables) link:presentationLink link:calculationLink link:definitionLink 40303 - Disclosure - Exploratory Well Costs (Capitalized Exploratory Costs and the Number of Projects for Which Exploratory Well Costs Have Been Capitalized) (Details) link:presentationLink link:calculationLink link:definitionLink 40504 - Disclosure - Long-term Debt (Interest Expenses) (Details) link:presentationLink link:calculationLink link:definitionLink 40702 - Disclosure - Incentive Plans (Number of Awards available under the Company's Long-Term Incentive Plan) (Details) link:presentationLink link:calculationLink link:definitionLink 40703 - Disclosure - Incentive Plans (Compensation Expense for Each Type of Incentive Award) (Details) link:presentationLink link:calculationLink link:definitionLink 40905 - Disclosure - Derivative Financial Instruments (Fixed-for-variable interest rates) (Details) link:presentationLink link:calculationLink link:definitionLink 41001 - Disclosure - Major Customers and Derivative Counterparties (Consolidated Oil, NGL and Gas Revenues) (Details) link:presentationLink link:calculationLink link:definitionLink 41002 - Disclosure - Major Customers and Derivative Counterparties (Derivative Assets and Liabilities by Counterparty) (Details) link:presentationLink link:calculationLink link:definitionLink 41102 - Disclosure - Asset Retirement Obligations (Company Asset Retirement Obligations) (Details) link:presentationLink link:calculationLink link:definitionLink 41202 - Disclosure - Interest and Other Income (Interest and Other Income) (Details) link:presentationLink link:calculationLink link:definitionLink 41401 - Disclosure - Other Expense (Components of Other Expense) (Details) link:presentationLink link:calculationLink link:definitionLink 41502 - Disclosure - Income Taxes (Intraperiod Tax Allocation) (Details) link:presentationLink link:calculationLink link:definitionLink 41503 - Disclosure - Income Taxes (Income Tax Components By Jurisdiction) (Details) link:presentationLink link:calculationLink link:definitionLink 41504 - Disclosure - Income Taxes (Income From Continuing Operations Before Taxes Attributable To Parent) (Details) link:presentationLink link:calculationLink link:definitionLink 41505 - Disclosure - Income Taxes (Reconciliation of Effective Tax Rate) (Details) link:presentationLink link:calculationLink link:definitionLink 41506 - Disclosure - Income Taxes (Components of Deferred Tax Assets (Liabilities)) (Details) link:presentationLink link:calculationLink link:definitionLink 41508 - Disclosure - Income Taxes (Income Tax Expense (Benefit) Attributable to Discontinued Operations) (Details) link:presentationLink link:calculationLink link:definitionLink 41601 - Disclosure - Net Income (Loss) Per Share Attributable to Common Stockholders (Reconciliation of Earnings, Basic and Diluted) (Details) link:presentationLink link:calculationLink link:definitionLink 41602 - Disclosure - Net Income (Loss) Per Share Attributable to Common Stockholders (Reconciliation of Weighted-Average Common Shares Outstanding, Basic and Diluted) (Details) link:presentationLink link:calculationLink link:definitionLink 41701 - Disclosure - Geographic Operating Segment Information (Income statement by geographic operating segment) (Details) link:presentationLink link:calculationLink link:definitionLink 41702 - Disclosure - Geographic Operating Segment Information (Reconciliation of assets from segment to consolidated) (Details) link:presentationLink link:calculationLink link:definitionLink 41801 - Disclosure - Impairment (Narrative Details) link:presentationLink link:calculationLink link:definitionLink 41901 - Disclosure - Volumetric Production Payments (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41903 - Disclosure - Volumetric Production Payments (Revenue Recognition in Future Periods) (Details) link:presentationLink link:calculationLink link:definitionLink 42001 - Disclosure - Insurance Claims (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 42102 - Disclosure - Discontinued Operations (Schedule of Disclosure Groups) (Details) link:presentationLink link:calculationLink link:definitionLink 42103 - Disclosure - Discontinued Operations (Components of Discontinued Operation) (Details) link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Incentive Plans link:presentationLink link:calculationLink link:definitionLink 11002 - Disclosure - Major Customers and Derivative Counterparties link:presentationLink link:calculationLink link:definitionLink 11301 - Disclosure - Asset Divestitures link:presentationLink link:calculationLink link:definitionLink 20202 - Disclosure - Summary of Significant Accounting Policies (Policy) link:presentationLink link:calculationLink link:definitionLink 30203 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 30303 - Disclosure - Exploratory Well Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - Disclosures About Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 30503 - Disclosure - Long-term Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 30603 - Disclosure - Related Party Transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 30703 - Disclosure - Incentive Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 30903 - Disclosure - Derivative Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 31003 - Disclosure - Major Customers and Derivative Counterparties (Tables) link:presentationLink link:calculationLink link:definitionLink 31103 - Disclosure - Asset Retirement Obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 31203 - Disclosure - Interest and Other Income (Tables) link:presentationLink link:calculationLink link:definitionLink 31403 - Disclosure - Other Expense (Tables) link:presentationLink link:calculationLink link:definitionLink 31603 - Disclosure - Net Income (Loss) Per Share Attributable to Common Stockholders (Tables) link:presentationLink link:calculationLink link:definitionLink 31703 - Disclosure - Geographic Operating Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 31903 - Disclosure - Volumetric Production Payments (Tables) link:presentationLink link:calculationLink link:definitionLink 40201 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40202 - Disclosure - Summary of Significant Accounting Policies (Accounts and Notes Receivable) (Details) link:presentationLink link:calculationLink link:definitionLink 40204 - Disclosure - Summary of Significant Accounting Policies (Oil Entitlement Liabilities and Gas Entitlement Assets and Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 40301 - Disclosure - Exploratory Well Costs (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40302 - Disclosure - Exploratory Well Costs (Capitalized Exploratory Well and Project Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 40304 - Disclosure - Exploratory Well Costs (Aging of Capitalized Costs) (Details) link:presentationLink link:calculationLink link:definitionLink 40401 - Disclosure - Disclosures About Fair Value Measurements (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40402 - Disclosure - Disclosures About Fair Value Measurements (Assets and Liabilities that are Measured at Fair Value on a Recurring Basis) (Details) link:presentationLink link:calculationLink link:definitionLink 40403 - Disclosure - Disclosures About Fair Value Measurements (Fair Value Measurements Using Significant Unobservable Inputs) (Details) link:presentationLink link:calculationLink link:definitionLink 40404 - Disclosure - Disclosures About Fair Value Measurements (Fair Values of the Company's Financial Instruments) (Details) link:presentationLink link:calculationLink link:definitionLink 40501 - Disclosure - Long-term Debt (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40502 - Disclosure - Long-term Debt (Components of Long-term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 40503 - Disclosure - Long-term Debt (Principal Maturities of Long Term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 40601 - Disclosure - Related Party Transactions (Related Party Transactions) (Details) link:presentationLink link:calculationLink link:definitionLink 40701 - Disclosure - Incentive Plans (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40704 - Disclosure - Incentive Plans (Restricted Stock Shares or Unit Awards) (Details) link:presentationLink link:calculationLink link:definitionLink 40705 - Disclosure - Incentive Plans (Weighted-Average Assumptions) (Details) link:presentationLink link:calculationLink link:definitionLink 40706 - Disclosure - Incentive Plans (Summary of Stock Option Plans Changes) (Details) link:presentationLink link:calculationLink link:definitionLink 40707 - Disclosure - Incentive Plans (Assumptions to Estimate the Fair Value of Performance Unit Awards Granted) (Details) link:presentationLink link:calculationLink link:definitionLink 40707 - Disclosure - Incentive Plans (Summary of Performance Unit Awards) (Details) link:presentationLink link:calculationLink link:definitionLink 40708 - Disclosure - Incentive Plans (Summary of performance Unit Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 40709 - Disclosure - Incentive Plans (Number of Awards Available for Partnerships Long-Term Incentive Plan) (Details) link:presentationLink link:calculationLink link:definitionLink 40710 - Disclosure - Incentive Plans (Outstanding Restricted Unit Awards and the Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 40711 - Disclosure - Incentive Plans (Unfunded Accumulated Postretirement Benefit Obligations) (Details) link:presentationLink link:calculationLink link:definitionLink 40712 - Disclosure - Incentive Plans (Future Postretirement Benefits) (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - Commitments and Contingencies (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40802 - Disclosure - Commitments and Contingencies (Future Minimum Lease Commitments) (Details) link:presentationLink link:calculationLink link:definitionLink 40803 - Disclosure - Commitments and Contingencies (Future Minimum Transportation Fees) (Details) link:presentationLink link:calculationLink link:definitionLink 40901 - Disclosure - Derivative Financial Instruments (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40902 - Disclosure - Derivative Financial Instruments (Oil Derivative Contracts Volume and Weighted Average Price) (Details) link:presentationLink link:calculationLink link:definitionLink 40903 - Disclosure - Derivative Financial Instruments (Natural Gas Liquids Volume and Weighted Average Price) (Details) link:presentationLink link:calculationLink link:definitionLink 40904 - Disclosure - Derivative Financial Instruments (Gas Volume and Weighted Average Price) (Details) link:presentationLink link:calculationLink link:definitionLink 40906 - Disclosure - Derivative Financial Instruments (Derivative Instrument) (Details) link:presentationLink link:calculationLink link:definitionLink 40907 - Disclosure - Derivative Financial Instruments (Derivative Obligations Under Terminated Hedge Arrangements) (Details) link:presentationLink link:calculationLink link:definitionLink 41101 - Disclosure - Asset Retirement Obligations (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41301 - Disclosure - Asset Divestitures (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41501 - Disclosure - Income Taxes (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41902 - Disclosure - Volumetric Production Payments (Deferred Revenue Carrying Values) (Details) link:presentationLink link:calculationLink link:definitionLink 42201 - Disclosure - Subsequent Events (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink