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Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 2418402 - Disclosure - Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 2318301 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Financing Activities link:presentationLink link:calculationLink link:definitionLink 2410401 - Disclosure - Financing Activities (Details) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - Gas Rate & Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 2412401 - Disclosure - Gas Rate & Regulatory Matters (Details) link:presentationLink link:calculationLink link:definitionLink 2117100 - Disclosure - Impact of Recently Issued Accounting Standards link:presentationLink link:calculationLink link:definitionLink 2217201 - Disclosure - Impact of Recently Issued Accounting Standards Impact of Recently Issued Accounting Standards (Policies) link:presentationLink link:calculationLink link:definitionLink 2109100 - 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Supplemental Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink