101 - Document - Document and Entity Information link:calculationLink link:presentationLink link:definitionLink 103 - Statement - CONSOLIDATED BALANCE SHEETS link:calculationLink link:presentationLink link:definitionLink 104 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 105 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:calculationLink link:presentationLink link:definitionLink 106 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:calculationLink link:presentationLink link:definitionLink 107 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:calculationLink link:presentationLink link:definitionLink 108 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 109 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:calculationLink link:presentationLink link:definitionLink 110 - Disclosure - Interim Financial Statements link:calculationLink link:presentationLink link:definitionLink 111 - Disclosure - Property, Plant and Equipment link:calculationLink link:presentationLink link:definitionLink 112 - Disclosure - Inventories link:calculationLink link:presentationLink link:definitionLink 113 - Disclosure - Discontinued Operations link:calculationLink link:presentationLink link:definitionLink 114 - Disclosure - Financing Arrangements link:calculationLink link:presentationLink link:definitionLink 115 - Disclosure - Cash Flow Disclosures link:calculationLink link:presentationLink link:definitionLink 116 - Disclosure - Employee and Retiree Benefit Plans link:calculationLink link:presentationLink link:definitionLink 117 - Disclosure - Incentive Plans link:calculationLink link:presentationLink link:definitionLink 118 - Disclosure - Earnings per Share link:calculationLink link:presentationLink link:definitionLink 119 - Disclosure - Income Taxes link:calculationLink link:presentationLink link:definitionLink 120 - Disclosure - Financial Instruments and Risk Management link:calculationLink link:presentationLink link:definitionLink 121 - Disclosure - Accumulated Other Comprehensive Income link:calculationLink link:presentationLink link:definitionLink 122 - Disclosure - Environmental and Other Contingencies link:calculationLink link:presentationLink link:definitionLink 123 - Disclosure - Commitments link:calculationLink link:presentationLink link:definitionLink 124 - Disclosure - Terra Nova Working Interest Redetermination link:calculationLink link:presentationLink link:definitionLink 125 - Disclosure - Accounting Matters link:calculationLink link:presentationLink link:definitionLink 126 - Disclosure - Business Segments link:calculationLink link:presentationLink link:definitionLink 127 - Disclosure - Subsequent Events link:calculationLink link:presentationLink link:definitionLink 128 - Disclosure - Property, Plant and Equipment (Tables) link:calculationLink link:presentationLink link:definitionLink 129 - Disclosure - Discontinued Operations (Tables) link:calculationLink link:presentationLink link:definitionLink 130 - Disclosure - Cash Flow Disclosures (Tables) link:calculationLink link:presentationLink link:definitionLink 131 - Disclosure - Employee and Retiree Benefit Plans (Tables) link:calculationLink link:presentationLink link:definitionLink 132 - Disclosure - Incentive Plans (Tables) link:calculationLink link:presentationLink link:definitionLink 133 - Disclosure - Earnings per Share (Tables) link:calculationLink link:presentationLink link:definitionLink 134 - Disclosure - Income Taxes (Tables) link:calculationLink link:presentationLink link:definitionLink 135 - Disclosure - Financial Instruments and Risk Management (Tables) link:calculationLink link:presentationLink link:definitionLink 136 - Disclosure - Accumulated Other Comprehensive Income (Tables) link:calculationLink link:presentationLink link:definitionLink 137 - Disclosure - Business Segments (Tables) link:calculationLink link:presentationLink link:definitionLink 138 - Disclosure - Property, Plant and Equipment - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 139 - Disclosure - Net Changes in Capitalized Exploratory Well Costs (Detail) link:calculationLink link:presentationLink link:definitionLink 140 - Disclosure - Aging of Capitalized Exploratory Well Costs (Detail) link:calculationLink link:presentationLink link:definitionLink 141 - Disclosure - Inventories - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 142 - Disclosure - Discontinued Operations - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 143 - Disclosure - Results of Operations Associated with Discontinued Operations (Detail) link:calculationLink link:presentationLink link:definitionLink 144 - Disclosure - Results of Operations Associated with Discontinued Operations (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 145 - Disclosure - Financing Arrangements - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 146 - Disclosure - Cash Flow Activities (Detail) link:calculationLink link:presentationLink link:definitionLink 147 - Disclosure - Components of Net Periodic Benefit Expense (Detail) link:calculationLink link:presentationLink link:definitionLink 148 - Disclosure - Employee and Retiree Benefit Plans - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 149 - Disclosure - Incentive Plans - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 150 - Disclosure - Share-Based Plans, Amounts Recognized (Detail) link:calculationLink link:presentationLink link:definitionLink 151 - Disclosure - Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income Per Common Share (Detail) link:calculationLink link:presentationLink link:definitionLink 152 - Disclosure - Options to Purchase Outstanding Shares of Common Stock Excluded from Computation of Diluted Earnings Per Share (Detail) link:calculationLink link:presentationLink link:definitionLink 153 - Disclosure - Income Taxes - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 154 - Disclosure - Effective Income Tax Rates (Detail) link:calculationLink link:presentationLink link:definitionLink 155 - Disclosure - Financial Instruments and Risk Management - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 156 - Disclosure - Fair Value of Derivative Instruments Not Designated as Hedging Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 157 - Disclosure - Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 158 - Disclosure - Fair Value of Interest Rate Derivative Contracts Designated as Hedging Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 159 - Disclosure - Carrying Value of Assets and Liabilities Recorded at Fair Value on Recurring Basis (Detail) link:calculationLink link:presentationLink link:definitionLink 160 - Disclosure - Components of Accumulated Other Comprehensive Income (Detail) link:calculationLink link:presentationLink link:definitionLink 161 - Disclosure - Environmental and Other Contingencies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 162 - Disclosure - Commitments - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 163 - Disclosure - Terra Nova Working Interest Redetermination - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 164 - Disclosure - Segment Reporting Information by Business Segments (Detail) link:calculationLink link:presentationLink link:definitionLink 165 - Disclosure - Subsequent Events - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink