00010 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 00020 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 00030 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 00040 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00050 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 00060 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00070 - Statement - CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT link:presentationLink link:calculationLink link:definitionLink 00080 - Statement - CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00090 - Statement - CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 00100 - Statement - CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00110 - Disclosure - Organization, Summary of Significant Accounting Policies and Recent Developments link:presentationLink link:calculationLink link:definitionLink 00120 - Disclosure - Rate and Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 00130 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 00140 - Disclosure - Commitments and Contingent Liabilities link:presentationLink link:calculationLink link:definitionLink 00150 - Disclosure - Short-term Borrowings link:presentationLink link:calculationLink link:definitionLink 00160 - Disclosure - Capitalization link:presentationLink link:calculationLink link:definitionLink 00170 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 00180 - Disclosure - Business Segment Data link:presentationLink link:calculationLink link:definitionLink 00190 - Disclosure - Quarterly Data - Unaudited link:presentationLink link:calculationLink link:definitionLink 00200 - Disclosure - Organization, Summary of Significant Accounting Policies and Recent Developments (Policies) link:presentationLink link:calculationLink link:definitionLink 00210 - Disclosure - Organization, Summary of Significant Accounting Policies and Recent Developments (Tables) link:presentationLink link:calculationLink link:definitionLink 00220 - Disclosure - Rate and Regulatory Matters (Tables) link:presentationLink link:calculationLink link:definitionLink 00230 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 00240 - Disclosure - Commitments and Contingent Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 00250 - Disclosure - Short-Term Borrowings (Tables) link:presentationLink link:calculationLink link:definitionLink 00260 - Disclosure - Capitalization (Tables) link:presentationLink link:calculationLink link:definitionLink 00270 - Disclosure - Employee Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 00280 - Disclosure - Business Segment Data (Tables) link:presentationLink link:calculationLink link:definitionLink 00290 - Disclosure - Quarterly Data - Unaudited (Tables) link:presentationLink link:calculationLink link:definitionLink 00300 - Disclosure - Organization, Summary of Significant Accounting Policies and Recent Developments (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 00310 - Disclosure - Organization, Summary of Significant Accounting Policies and Recent Developments (Schedule of Depreciation Rates) (Details) link:presentationLink link:calculationLink link:definitionLink 00320 - Disclosure - Organization, Summary of Significant Accounting Policies and Recent Developments (Schedule of AFUDC Rates) (Details) link:presentationLink link:calculationLink link:definitionLink 00330 - Disclosure - Organization, Summary of Significant Accounting Policies and Recent Developments (Schedule of Operating Revenues) (Details) link:presentationLink link:calculationLink link:definitionLink 00340 - Disclosure - Rate and Regulatory Matters (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 00350 - Disclosure - Rate and Regulatory Matters (Schedule of Regulatory Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 00360 - Disclosure - Income Taxes (Schedule of Income Tax Expense Reconciliation) (Details) link:presentationLink link:calculationLink link:definitionLink 00370 - Disclosure - Income Taxes (Schedule of Income Tax Expense) (Details) link:presentationLink link:calculationLink link:definitionLink 00380 - Disclosure - Income Taxes (Schedule of Net Deferred Tax Liability) (Details) link:presentationLink link:calculationLink link:definitionLink 00390 - Disclosure - Income Taxes (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 00400 - Disclosure - Commitments and Contingent Liabilities (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 00410 - Disclosure - Commitments and Contingent Liabilities (Schedule of Purchased Water Costs) (Details) link:presentationLink link:calculationLink link:definitionLink 00420 - Disclosure - Commitments and Contingent Liabilities (Schedule of Operating Lease ROU Assets and Lease Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 00430 - Disclosure - Commitments and Contingent Liabilities (Schedule of Future Minimum Operating Lease) (Details) link:presentationLink link:calculationLink link:definitionLink 00440 - Disclosure - Short-term Borrowings (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 00450 - Disclosure - Short Term Borrowings (Schedule of Weighted Average Daily Amounts of Borrowings Outstanding) (Details) link:presentationLink link:calculationLink link:definitionLink 00460 - Disclosure - Short-term Borrowings (Schedule of Line of Credit) (Details) link:presentationLink link:calculationLink link:definitionLink 00470 - Disclosure - Capitalization (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 00480 - Disclosure - Capitalization (Schedule of Maturities of Long-term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 00490 - Disclosure - Capitalization (Schedule of Earnings Per Share) (Details) link:presentationLink link:calculationLink link:definitionLink 00500 - Disclosure - Capitalization (Schedule of Carrying Amount and Fair Value of Bonds) (Details) link:presentationLink link:calculationLink link:definitionLink 00510 - Disclosure - Employee Benefit Plans (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 00520 - Disclosure - Employee Benefit Plans (Schedule of Change in Projected Benefit Obligation) (Details) link:presentationLink link:calculationLink link:definitionLink 00530 - Disclosure - Employee Benefit Plans (Schedule of Change in Fair Value of Plan Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 00540 - Disclosure - Employee Benefit Plans (Schedule of Employee Benefit Plans Recognized in Balance Sheet) (Details) link:presentationLink link:calculationLink link:definitionLink 00550 - Disclosure - Employee Benefit Plans (Schedule of Periodic Costs For Employee Retirement Benefit Plans) (Details) link:presentationLink link:calculationLink link:definitionLink 00560 - Disclosure - Employee Benefit Plans (Schedule of Amounts Expected to be Amortized from Regulatory Assets to Net Periodic Benefit Cost) (Details) link:presentationLink link:calculationLink link:definitionLink 00570 - Disclosure - Employee Benefit Plans (Schedule of Discount and Compensation Rates) (Details) link:presentationLink link:calculationLink link:definitionLink 00580 - Disclosure - Employee Benefit Plans (Schedule of Effect of One-percentage Point Change in Assumed Health Care Cost Trend Rates) (Details) link:presentationLink link:calculationLink link:definitionLink 00590 - Disclosure - Employee Benefit Plans (Schedule of Expected Benefit Payments) (Details) link:presentationLink link:calculationLink link:definitionLink 00600 - Disclosure - Employee Benefit Plans (Schedule of Allocation of Plan Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 00610 - Disclosure - Employee Benefit Plans (Schedule of Fair Value of Pension Plan Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 00620 - Disclosure - Employee Benefit Plans (Schedule of Fair Value of Other Benefits Plan Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 00630 - Disclosure - Employee Benefit Plans (Schedule of Restricted Stock Plan) (Details) link:presentationLink link:calculationLink link:definitionLink 00640 - Disclosure - Business Segment Data (Details) link:presentationLink link:calculationLink link:definitionLink 00650 - Disclosure - Quarterly Data - Unaudited (Details) link:presentationLink link:calculationLink link:definitionLink