Rate and Regulatory Matters (Notes)	12 Months Ended
Dec. 31, 2015
Public Utilities, Rate Matters [Abstract]
Public Utilities, Disclosure of Rate Matters [Text Block]	RATE AND REGULATORY MATTERS Rates Our rates became effective January 1, 2013, and will remain in effect for 5 years.

Public Utilities, Disclosure of Rate Matters [Text Block] Describes all of the specific events that have or may impact rates and amortization of regulatory assets and liabilities (for example, pending or recently concluded regulatory proceedings, environmental requirements). Specifics may include quantifications related to rates, costs, and earnings. Events may relate to rate moratoriums or price caps.

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