2104100 - Disclosure - Acquisitions and Divestitures
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2404402 - Disclosure - Acquisitions and Divestitures (Narrative) (Details)
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2304301 - Disclosure - Acquisitions and Divestitures (Tables)
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2110100 - Disclosure - Asset Retirement Obligations
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2410402 - Disclosure - Asset Retirement Obligations (Details)
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2310301 - Disclosure - Asset Retirement Obligations (Tables)
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2102100 - Disclosure - Basis Of Presentation
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2402402 - Disclosure - Basis Of Presentation Basis of Presentation (Narrative) (Details)
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2202201 - Disclosure - Basis Of Presentation (Policies)
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2111100 - Disclosure - Commitments And Contingencies
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1001000 - Statement - Consolidated Balance Sheets
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1001501 - Statement - Consolidated Balance Sheets (Parenthetical)
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1004000 - Statement - Consolidated Statement Of Equity
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1004501 - Statement - Consolidated Statement Of Equity (Parenthetical)
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1005000 - Statement - Consolidated Statements Of Cash Flows
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1003000 - Statement - Consolidated Statements Of Comprehensive Income
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1002000 - Statement - Consolidated Statements Of Operations
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2106100 - Disclosure - Derivative Financial Instruments
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2406405 - Disclosure - Derivative Financial Instruments Derivative Financial Instruments (Schedule of Gas Derivative Contracts Volume and Weighted Average Prices) (Details)
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2406404 - Disclosure - Derivative Financial Instruments Derivative Financial Instruments (Schedule of NGL Derivative Contracts Volume and Weighted Average Prices) (Details)
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2406402 - Disclosure - Derivative Financial Instruments (Narrative) (Details)
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2406407 - Disclosure - Derivative Financial Instruments (Schedule Of Derivative Instruments) (Details)
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2406408 - Disclosure - Derivative Financial Instruments (Schedule Of Derivative Obligations Under Terminated Hedge Arrangements) (Details)
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2406403 - Disclosure - Derivative Financial Instruments (Schedule Of Oil Derivative Contracts Volume And Weighted Average Prices) (Details)
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2306301 - Disclosure - Derivative Financial Instruments (Tables)
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0001000 - Document - Document And Entity Information
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2107100 - Disclosure - Exploratory Costs
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2407403 - Disclosure - Exploratory Costs Exploratory Costs (Narrative) (Details)
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2407402 - Disclosure - Exploratory Costs (Schedule Of Capitalized Exploratory Well And Project Activity) (Details)
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2307301 - Disclosure - Exploratory Costs (Tables)
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2105100 - Disclosure - Fair Value Measurements
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2405404 - Disclosure - Fair Value Measurements Nonrecurring Fair Value Measurements (Details)
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2405402 - Disclosure - Fair Value Measurements (Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details)
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2405403 - Disclosure - Fair Value Measurements (Schedule Of Carrying Values And Financial Instruments Not Carried At Fair Value) (Details)
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2305301 - Disclosure - Fair Value Measurements (Tables)
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2109100 - Disclosure - Incentive Plans
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2409402 - Disclosure - Incentive Plans Incentive Plans (Stock-based compensation) (Details)
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2309301 - Disclosure - Incentive Plans (Tables)
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2114100 - Disclosure - Income Taxes
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2414402 - Disclosure - Income Taxes (Schedule Of Income Tax (Provisions) Benefits Attributable To Income From Continuing Operations) (Details)
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2314301 - Disclosure - Income Taxes (Tables)
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2112100 - Disclosure - Interest And Other Income
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2412402 - Disclosure - Interest And Other Income (Components Of Interest And Other Income) (Details)
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2312301 - Disclosure - Interest And Other Income (Tables)
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2108100 - Disclosure - Long-Term Debt
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2408401 - Disclosure - Long-Term Debt (Details)
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2115100 - Disclosure - Net Income (Loss) Per Share
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2415403 - Disclosure - Net Income (Loss) Per Share (Reconciliation Of Basic To Diluted Weighted Average Common Shares Outstanding) (Details)
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2415402 - Disclosure - Net Income (Loss) Per Share (Reconciliation Of Earnings Attributable To Common Stockholders, Basic And Diluted) (Details)
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2315301 - Disclosure - Net Income (Loss) Per Share (Tables)
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2101100 - Disclosure - Organization And Nature Of Operations
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2113100 - Disclosure - Other Expense
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2413402 - Disclosure - Other Expense (Schedule Of Components Of Other Expense) (Details)
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2313301 - Disclosure - Other Expense (Tables)
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2117100 - Disclosure - Subsequent Events
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2417401 - Disclosure - Subsequent Events (Details)
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