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Number Of Customers4 segmentsRevenues from contracts with customers4 segmentsLevel of particulate matter in pounds per million british thermal units that the EPA reverted back to with the repeal of the 2024 amendments1 segmentsNumber of applicable GHG performance standards for coal plants1 segmentsCapacity of fossil-fueled generation retired, in megawatts1 segmentsCapacity of coal-fired generation to be retired by the end of 2031, in megawatts1 segmentsRequested Rate Increase (Decrease), Amount3 segmentsRequested Rate Increase (Decrease), Percentage3 segmentsPercent fuel and purchased power costs can vary from the rate case approved costs before deferral is required1 segmentsPurchase Obligation2 segments20262 segments20272 segments20282 segments20292 segments20302 segmentsLater Years2 segmentsLevel of particulate matter in pounds per million british thermal unit that the EPA is proposing to return to1 segmentsAnnual state renewable portfolio requirement, as a percent1 segmentsRequired renewable energy percent achieved1 segmentsPercent of annual operating revenues used to fund renewable program1 segmentsAnnual state renewable portfolio requirement for 2019 and 2020, as a percent1 segmentsAnnual energy optimization target, as a percent1 segmentsPercentage renewable portfolio requirement 2021 and beyond1 segmentsRegulatory Asset1 segmentsEstimated future expenditures for environmental remediation1 segmentsEnvironmental remediation liabilities1 segmentsAccounts receivable and unbilled revenues1 segmentsAllowance for credit losses1 segmentsAccounts Receivable, after Allowance for Credit Loss1 segmentsTotal accounts receivable, net - past due greater than 90 days1 segmentsPast due greater than 90 days - collection risk mitigated by regulatory mechanisms1 segmentsNotional sales volumes1 segmentsGains (losses)1 segmentsFuel and purchased power costs1 segmentsCost of natural gas sold1 segmentsOther operation and maintenance1 segmentsD&A1 segmentsProperty and revenue taxes1 segmentsEarnings (losses) from equity method investments1 segmentsOther Nonoperating Income (Expense)1 segmentsInterest Expense2 segmentsIncome tax expense (benefit)1 segmentsPreferred stock dividends of subsidiary1 segmentsNet income attributed to noncontrolling interests1 segmentsNet income attributed to common shareholders1 segmentsCapital expenditures and asset acquisitions1 segmentsEquity Method Investments1 segmentsTotal Assets1 segmentsProvision for Credit Losses1 segmentsProvision for credit losses deferred for future recovery or refund1 segmentsAccounts Receivable, Allowance for Credit Loss, Writeoff1 segmentsRecoveries of amounts previously written off1 segmentsRevenues amortized from deferred revenue during the period1 segmentsImpairments related to Illinois segment1 segmentsEquity in earnings of transmission affiliates1 segments