00100 - Statement - Consolidated Balance Sheetslink:presentationLinklink:calculationLinklink:definitionLink00200 - Statement - Consolidated Statements Of Net Incomelink:presentationLinklink:calculationLinklink:definitionLink00300 - Statement - Consolidated Statements Of Comprehensive Incomelink:presentationLinklink:calculationLinklink:definitionLink00400 - Statement - Consolidated Statements Of Capitalizationlink:presentationLinklink:calculationLinklink:definitionLink00410 - Statement - Consolidated Statements of Capitalization (Alternative Calculation)link:presentationLinklink:calculationLinklink:definitionLink00600 - Statement - Consolidated Statements Of Cash Flowslink:presentationLinklink:calculationLinklink:definitionLink40401 - Disclosure - Property, Plant And Equipment (Details)link:presentationLinklink:calculationLinklink:definitionLink40502 - Disclosure - Accounts Receivable (Net Accounts Receivable) (Details)link:presentationLinklink:calculationLinklink:definitionLink40702 - Disclosure - Income Taxes (Schedule Of Provision For Income Taxes) (Details)link:presentationLinklink:calculationLinklink:definitionLink40703 - Disclosure - Income Taxes (Schedule Of Reasons For Differences Between Statutory Federal Income Tax Rate To Income Before Income Tax Expense) (Details)link:presentationLinklink:calculationLinklink:definitionLink40705 - Disclosure - Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details)link:presentationLinklink:calculationLinklink:definitionLink41002 - Disclosure - Leases (Components Of Lease Expense) (Details)link:presentationLinklink:calculationLinklink:definitionLink41003 - Disclosure - Leases (Maturities Of Operating Lease Liabilities) (Details)link:presentationLinklink:calculationLinklink:definitionLink41003 - Disclosure - Leases (Maturities Of Operating Lease Liabilities) (Details) Alternative (Imported)link:presentationLinklink:calculationLinklink:definitionLink41202 - Disclosure - Fair Value Of Financial Instruments (Summary Of Unrealized Gains And Losses On Equity Securities) (Details)link:presentationLinklink:calculationLinklink:definitionLink41402 - Disclosure - Net Income Per Common Share and Equity per Common Share (Schedule Of Earnings Per Share) (Details)link:presentationLinklink:calculationLinklink:definitionLink41603 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Changes In Benefit Obligation And Fair Value Of Plan Assets) (Details)link:presentationLinklink:calculationLinklink:definitionLink41604 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Net Liability Recognized On Consolidated Balance Sheets) (Details)link:presentationLinklink:calculationLinklink:definitionLink41606 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Components Of Net Periodic Benefit Costs) (Details)link:presentationLinklink:calculationLinklink:definitionLink41607 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Net Periodic Benefit Cost Not Yet Recognized) (Details)link:presentationLinklink:calculationLinklink:definitionLink42102 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Condensed Balance Sheets) (Details)link:presentationLinklink:calculationLinklink:definitionLink42103 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Condensed Statements of Comprehensive Income) (Details)link:presentationLinklink:calculationLinklink:definitionLink00090 - Document - Document And Entity Informationlink:presentationLinklink:calculationLinklink:definitionLink00105 - Statement - Consolidated Balance Sheets (Parenthetical)link:presentationLinklink:calculationLinklink:definitionLink00305 - Statement - Consolidated Statements Of Comprehensive Income (Parenthetical)link:presentationLinklink:calculationLinklink:definitionLink00405 - Statement - Consolidated Statements Of Capitalization (Parenthetical)link:presentationLinklink:calculationLinklink:definitionLink00500 - Statement - Consolidated Statements Of Equitylink:presentationLinklink:calculationLinklink:definitionLink00505 - Statement - Consolidated Statements Of Equity (Parenthetical)link:presentationLinklink:calculationLinklink:definitionLink00605 - Statement - Consolidated Statements Of Cash Flows (Parenthetical)link:presentationLinklink:calculationLinklink:definitionLink10101 - Disclosure - Summary Of Significant Accounting Policieslink:presentationLinklink:calculationLinklink:definitionLink10201 - Disclosure - Acquisitionslink:presentationLinklink:calculationLinklink:definitionLink10301 - Disclosure - Dispositionslink:presentationLinklink:calculationLinklink:definitionLink10401 - Disclosure - Property, Plant And Equipmentlink:presentationLinklink:calculationLinklink:definitionLink10501 - Disclosure - Accounts Receivablelink:presentationLinklink:calculationLinklink:definitionLink10601 - Disclosure - Regulatory Assets And Liabilitieslink:presentationLinklink:calculationLinklink:definitionLink10701 - Disclosure - Income Taxeslink:presentationLinklink:calculationLinklink:definitionLink10801 - Disclosure - Taxes Other Than Income Taxeslink:presentationLinklink:calculationLinklink:definitionLink10901 - Disclosure - Commitments And Contingencieslink:presentationLinklink:calculationLinklink:definitionLink11001 - Disclosure - Leaseslink:presentationLinklink:calculationLinklink:definitionLink11101 - Disclosure - Long-Term Debt And Loans Payablelink:presentationLinklink:calculationLinklink:definitionLink11201 - Disclosure - Fair Value Of Financial Instrumentslink:presentationLinklink:calculationLinklink:definitionLink11301 - Disclosure - Stockholders’ Equitylink:presentationLinklink:calculationLinklink:definitionLink11401 - Disclosure - Net Income per Common Share and Equity per Common Sharelink:presentationLinklink:calculationLinklink:definitionLink11501 - Disclosure - Employee Stock and Incentive Planlink:presentationLinklink:calculationLinklink:definitionLink11601 - Disclosure - Pension Plans And Other Post-Retirement Benefitslink:presentationLinklink:calculationLinklink:definitionLink11701 - Disclosure - Water And Wastewater Rateslink:presentationLinklink:calculationLinklink:definitionLink11801 - Disclosure - Segment Informationlink:presentationLinklink:calculationLinklink:definitionLink11901 - Disclosure - Selected Quarterly Financial Datalink:presentationLinklink:calculationLinklink:definitionLink12101 - Schedule - Schedule 1 - Condensed Parent Company Financial Statementslink:presentationLinklink:calculationLinklink:definitionLink20102 - Disclosure - Summary Of Significant Accounting Policies (Policy)link:presentationLinklink:calculationLinklink:definitionLink30103 - Disclosure - Summary Of Significant Accounting Policies (Tables)link:presentationLinklink:calculationLinklink:definitionLink30403 - Disclosure - Property, Plant And Equipment (Tables)link:presentationLinklink:calculationLinklink:definitionLink30503 - Disclosure - Accounts Receivable (Tables)link:presentationLinklink:calculationLinklink:definitionLink30603 - Disclosure - Regulatory Assets And Liabilities (Tables)link:presentationLinklink:calculationLinklink:definitionLink30703 - Disclosure - Income Taxes (Tables)link:presentationLinklink:calculationLinklink:definitionLink30803 - Disclosure - Taxes Other Than Income Taxes (Tables)link:presentationLinklink:calculationLinklink:definitionLink30903 - Disclosure - Commitments And Contingencies (Tables)link:presentationLinklink:calculationLinklink:definitionLink31003 - Disclosure - Leases (Tables)link:presentationLinklink:calculationLinklink:definitionLink31103 - Disclosure - Long-Term Debt And Loans Payable (Tables)link:presentationLinklink:calculationLinklink:definitionLink31203 - Disclosure - Fair Value Of Financial Instruments (Tables)link:presentationLinklink:calculationLinklink:definitionLink31303 - Disclosure - Stockholders’ Equity (Tables)link:presentationLinklink:calculationLinklink:definitionLink31403 - Disclosure - Net Income per Common Share and Equity per Common Share (Tables)link:presentationLinklink:calculationLinklink:definitionLink31503 - Disclosure - Employee Stock And Incentive Plan (Tables)link:presentationLinklink:calculationLinklink:definitionLink31603 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Tables)link:presentationLinklink:calculationLinklink:definitionLink31803 - Disclosure - Segment Information (Tables)link:presentationLinklink:calculationLinklink:definitionLink31903 - Disclosure - Selected Quarterly Financial Data (Tables)link:presentationLinklink:calculationLinklink:definitionLink40101 - Disclosure - Summary Of Significant Accounting Policies (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink40102 - Disclosure - Summary Of Significant Accounting Policies (Schedule Of Disaggregation Of Revenue) (Details)link:presentationLinklink:calculationLinklink:definitionLink40103 - Disclosure - Summary Of Significant Accounting Policies (Summary Of Changes In Goodwill) (Details)link:presentationLinklink:calculationLinklink:definitionLink40201 - Disclosure - Acquisitions (Details)link:presentationLinklink:calculationLinklink:definitionLink40301 - Disclosure - Dispositions (Details)link:presentationLinklink:calculationLinklink:definitionLink40501 - Disclosure - Accounts Receivable (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink40503 - Disclosure - Accounts Receivable (Allowance For Doubtful Accounts) (Details)link:presentationLinklink:calculationLinklink:definitionLink40601 - Disclosure - Regulatory Assets And Liabilities (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink40602 - Disclosure - Regulatory Assets And Liabilities (Components Of Regulatory Assets And Regulatory Liabilities) (Details)link:presentationLinklink:calculationLinklink:definitionLink40701 - Disclosure - Income Taxes (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink40704 - Disclosure - Income Taxes (Unrecognized Tax Benefits Table) (Details)link:presentationLinklink:calculationLinklink:definitionLink40801 - Disclosure - Taxes Other Than Income Taxes (Details)link:presentationLinklink:calculationLinklink:definitionLink40901 - Disclosure - Commitments And Contingencies (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink40903 - Disclosure - Commitments And Contingencies (Schedule Of Purchase Obligations) (Details)link:presentationLinklink:calculationLinklink:definitionLink40904 - Disclosure - Commitments And Contingencies (Schedule Of Rent Expense Under Operating Leases) (Details)link:presentationLinklink:calculationLinklink:definitionLink41001 - Disclosure - Leases (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41101 - Disclosure - Long-Term Debt And Loans Payable (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41102 - Disclosure - Long-Term Debt And Loans Payable (Schedule Of Long-Term Debt Future Sinking Fund Payments And Debt Maturities) (Details)link:presentationLinklink:calculationLinklink:definitionLink41105 - Disclosure - Long-Term Debt And Loans Payable (Summary Of Amounts Recognized In Earnings) (Details)link:presentationLinklink:calculationLinklink:definitionLink41201 - Disclosure - Fair Value Of Financial Instruments (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41203 - Disclosure - Fair Value Of Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values Of Long-Term Debt) (Details)link:presentationLinklink:calculationLinklink:definitionLink41301 - Disclosure - Stockholders’ Equity (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41302 - Disclosure - Stockholders’ Equity (Shares Outstanding And Treasury Shares Held) (Details)link:presentationLinklink:calculationLinklink:definitionLink41401 - Disclosure - Net Income Per Common Share And Equity Per Common Share (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41501 - Disclosure - Employee Stock And Incentive Plan (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41502 - Disclosure - Employee Stock And Incentive Plan (Schedule Of Performance Goals) (Details)link:presentationLinklink:calculationLinklink:definitionLink41504 - Disclosure - Employee Stock And Incentive Plan (Summary Of Compensation Costs) (Details)link:presentationLinklink:calculationLinklink:definitionLink41505 - Disclosure - Employee Stock And Incentive Plan (Summary Of Value Of Stock Awards) (Details)link:presentationLinklink:calculationLinklink:definitionLink41506 - Disclosure - Employee Stock and Incentive Plan (Summary Of Nonvested PSU Transactions) (Details)link:presentationLinklink:calculationLinklink:definitionLink41507 - Disclosure - Employee Stock And Incentive Plan (Summary Of Nonvested RSU Transactions) (Details)link:presentationLinklink:calculationLinklink:definitionLink41508 - Disclosure - Employee Stock And Incentive Plan (Summary Of Nonvested Share Activity – Restricted Stock) (Details)link:presentationLinklink:calculationLinklink:definitionLink41509 - Disclosure - Employee Stock And Incentive Plan (Assumptions Used In The Pricing Model) (Details)link:presentationLinklink:calculationLinklink:definitionLink41510 - Disclosure - Employee Stock And Incentive Plan (Summary Of Value Of Restricted Stock Units) (Details)link:presentationLinklink:calculationLinklink:definitionLink41511 - Disclosure - Employee Stock And Incentive Plan (Summary Of Stock Option Transactions) (Details)link:presentationLinklink:calculationLinklink:definitionLink41512 - Disclosure - Employee Stock And Incentive Plan (Summary Of Options Outstanding And Options Exercisable) (Details)link:presentationLinklink:calculationLinklink:definitionLink41513 - Disclosure - Employee Stock And Incentive Plan (Summary Of Stock Options Exercised And Vested) (Details)link:presentationLinklink:calculationLinklink:definitionLink41514 - Disclosure - Employee Stock And Incentive Plan (Summary Of Value Of Restricted Stock Awards) (Details)link:presentationLinklink:calculationLinklink:definitionLink41515 - Disclosure - Employee Stock And Incentive Plan (Summary Of Nonvested Share Activity) (Details)link:presentationLinklink:calculationLinklink:definitionLink41519 - Disclosure - Employee Stock And Incentive Plan (Summary Of Value Of Restricted Stock Awards) (Details)link:presentationLinklink:calculationLinklink:definitionLink41601 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41602 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Benefit Payments Of Expected Future Service) (Details)link:presentationLinklink:calculationLinklink:definitionLink41605 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Accumulated And Projected Benefit Obligations) (Details)link:presentationLinklink:calculationLinklink:definitionLink41608 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Net Periodic Benefit Cost That Will Be Amortized) (Details)link:presentationLinklink:calculationLinklink:definitionLink41609 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Assumptions Related To Pension And Other Postretirement Benefit Plans) (Details)link:presentationLinklink:calculationLinklink:definitionLink41610 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Effect Of One-Percentage-Point Change In Assumed Health Care Cost Trend Rates) (Details)link:presentationLinklink:calculationLinklink:definitionLink41611 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Target Asset Allocations) (Details)link:presentationLinklink:calculationLinklink:definitionLink41612 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Fair Value Of Plan Assets) (Details)link:presentationLinklink:calculationLinklink:definitionLink41701 - Disclosure - Water And Wastewater Rates (Details)link:presentationLinklink:calculationLinklink:definitionLink41801 - Disclosure - Segment Information (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink41802 - Disclosure - Segment Information (Company's Segment Information, Continuing Operations) (Details)link:presentationLinklink:calculationLinklink:definitionLink41901 - Disclosure - Selected Quarterly Financial Data (Details)link:presentationLinklink:calculationLinklink:definitionLink42101 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Narrative) (Details)link:presentationLinklink:calculationLinklink:definitionLink42104 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Condensed Statements of Cash Flows) (Details)link:presentationLinklink:calculationLinklink:definitionLink42105 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Debt Maturities Of Long-Term Debt) (Details)link:presentationLinklink:calculationLinklink:definitionLink