0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Statement of Income (Loss) and Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Statement of Income (Loss) and Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Statement of Income (Loss) and Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Statement of Income (Loss) and Comprehensive Income (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Balance Sheet link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Balance Sheet link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Balance Sheet (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statement of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Consolidated Statement of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Summary Of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Rate And Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Short-Term Debt And Liquidity link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Long-Term Debt And Equity Financings link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Other Income, Net link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Derivative Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Commitments And Contingencies link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Callaway Energy Center link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Retirement Benefits link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Supplemental Information link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary Of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Rate and Regulatory Matters (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Short-Term Debt and Liquidity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Other Income, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Derivative Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Related Party Transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Callaway Energy Center (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Retirement Benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Supplemental Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Summary Of Significant Accounting Policies - Schedule of Other Assets and Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Rate And Regulatory Matters (Narrative-Missouri) (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Rate And Regulatory Matters (Narrative-Illinois) (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Rate And Regulatory Matters (Narrative-Federal) (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Short-Term Debt And Liquidity (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Short-Term Debt and Liquidity (Short-Term Debt outstanding) (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Short-Term Debt and Liquidity (Short-Term Debt Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Long-Term debt and Equity Financings (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Other Income, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Derivative Financial Instruments (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Derivative Financial Instruments (Open Gross Derivative Volumes By Commodity Type) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Derivative Financial Instruments (Derivative Instruments Carrying Value) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Derivative Financial Instruments (Derivative Instruments Carrying Value) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Fair Value Measurements (Schedule Of Fair Value Hierarchy Of Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Fair Value Measurements (Schedule Of Changes In The Fair Value Of Financial Assets And Liabilities Classified As Level Three In The Fair Value Hierarchy) (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Fair Value Measurements (Schedule Of Valuation Process And Unobservable Inputs) (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Assets and Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Related Party Transactions (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Related Party Transactions (Schedule of Affiliate Receivables and Payables) (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Related Party Transactions (Effects of Related-party Transactions on the Statement of Income) (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Commitments And Contingencies (Environmental Matters) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Callaway Energy Center (Insurance Disclosure) (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Retirement Benefits (Components Of Net Periodic Benefit Cost) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Retirement Benefits (Summary of Benefit Plan Costs Incurred) (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Supplemental Information (Cash and Cash Equivalents) (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Supplemental Information (Allowance for Doubtful Accounts) (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Supplemental Information (Supplemental Cash Flow Information) (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Supplemental Information (Schedule of Asset Retirement Obligations) (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Supplemental Information (Schedule of Asset Retirement Obligations) (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Supplemental Information (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Supplemental Information (Schedule Of Excise Taxes) (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Supplemental Information (Earnings Per Share) (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Segment Information (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Segment Information (Schedule Of Segment Reporting Information By Segment) (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Segment Information (Disaggregation of Revenue) (Details) link:presentationLink link:calculationLink link:definitionLink