Current number of customers that have elected non-standard meter service

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Presumed number of customers that will elect non-standard meter service

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- Definition

Public Utilities, Approved 2014 Incentive Portion of Program Implementation Costs

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Public Utilities, Approved 2014 Program Implementation Costs

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Public Utilities, Approved 2015 Program Implementation Costs

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- Definition

Public Utilities, Approved Deployment Costs

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- Definition

Public Utilities, Approved Non-standard metering ongoing expenses monthly charge

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Public Utilities, Approved Non-standard metering service cost initial fee range

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Public Utilities, Collection of Deployment Costs Through Surcharge Period

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Public Utilities, Completion Period of Advanced Meter Deployment

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- Definition

Public Utilities, Non-standard metering ongoing expenses total to be borne by opt-out customers

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Public Utilities, Non-standard metering service cost total to be borne by opt-out customers

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- Definition

Public Utilities, Unapproved 2015 Program Implementation Costs

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Public Utilities, Unapproved 2015 Program Implementation Costs, Bonus

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Regulatory and Rate Matters - TNMP Narrative (Details) (Texas-New Mexico Power Company [Member], USD $)	1 Months Ended
	Jul. 30, 2011	Mar. 31, 2015 customer	Apr. 24, 2015 customer
Advanced Meter System Deployment and Surcharge Request [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Deployment Costs	$ 113,400,000
Public Utilities, Collection of Deployment Costs Through Surcharge Period	12 years
Public Utilities, Completion Period of Advanced Meter Deployment	5 years
Public Utilities, Non-standard metering service cost total to be borne by opt-out customers		200,000
Public Utilities, Non-standard metering ongoing expenses total to be borne by opt-out customers		500,000
Public Utilities, Approved Non-standard metering ongoing expenses monthly charge		36.78
Presumed number of customers that will elect non-standard meter service		1,081
Energy Efficiency [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved 2014 Program Implementation Costs		5,600,000
Public Utilities, Unapproved 2015 Program Implementation Costs, Bonus		700,000
Public Utilities, Unapproved 2015 Program Implementation Costs		5,700,000
Public Utilities, Approved 2014 Incentive Portion of Program Implementation Costs		1,500,000
Public Utilities, Approved 2015 Program Implementation Costs		5,700,000
Minimum [Member] \| Advanced Meter System Deployment and Surcharge Request [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Non-standard metering service cost initial fee range		63.97
Maximum [Member] \| Advanced Meter System Deployment and Surcharge Request [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Non-standard metering service cost initial fee range		$ 168.61
Subsequent Event [Member] \| Advanced Meter System Deployment and Surcharge Request [Member]
Public Utilities, General Disclosures [Line Items]
Current number of customers that have elected non-standard meter service			91