2102100 - Disclosure - Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - Commitments & Contingencies link:presentationLink link:calculationLink link:definitionLink 2408401 - Disclosure - Commitments & Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1002501 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 2103100 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 2403402 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2303301 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Electric Rate & Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 2410401 - Disclosure - Electric Rate & Regulatory Matters (Details) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Environmental & Sustainability Matters link:presentationLink link:calculationLink link:definitionLink 2411401 - Disclosure - Environmental & Sustainability Matters (Details) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - Excise & Utility Receipts Taxes link:presentationLink link:calculationLink link:definitionLink 2404401 - Disclosure - Excise & Utility Receipts Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 2115100 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 2415402 - Disclosure - Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 2415403 - Disclosure - Fair Value Measurements Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2315301 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - Gas Rate & Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 2409401 - Disclosure - Gas Rate & Regulatory Matters (Details) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - Impact of Recently Issued Accounting Principles link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - Investment in ProLiance Holdings, LLC link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - Investment in ProLiance Holdings, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - Investment in ProLiance Holdings, LLC (Tables) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - Organization and Nature of Operations link:presentationLink link:calculationLink link:definitionLink 2401401 - Disclosure - Organization and Nature of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - Retirement Plans & Other Postretirement Benefits link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Retirement Plans & Other Postretirement Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Retirement Plans & Other Postretirement Benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 2116100 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 2416403 - Disclosure - Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink 2416402 - Disclosure - Segment Reporting Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2316301 - Disclosure - Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Supplemental Cash Flow Information link:presentationLink link:calculationLink link:definitionLink 2406401 - Disclosure - Supplemental Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink