Public Utilities, Commitments And Contingencies [Line Items]

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- Definition

Public Utilities, Jointly Owned Utility Plant, Sale of Ownership Percentage

+ References

No definition available.

+ Details

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- Definition

Public Utilities, Number of Compliance alternatives

+ References

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- Definition

Public Utilities, Ownership Percentage

+ References

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- Definition

Public Utilities, Plant Requirement to Meet NOx emissions Limit

+ References

No definition available.

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- Definition

Public Utilities, Plant Requirement to Meet Opacity Limit, Percentage

+ References

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+ Details

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- Definition

Public Utilities, Rule Imposes Opacity Limitation on Certain Fugitive Dust Emissions From Coal and Material Handling Operations

+ References

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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Commitments and Contingencies - Four Corners (Details) $ in Millions	Jun. 30, 2015 USD ($) lbsofnox / mmbtu	Dec. 31, 2013	Aug. 06, 2012 compliance_alternative
Four Corners [Member]
Public Utilities, Commitments And Contingencies [Line Items]
Public Utilities, Jointly Owned Utility Plant, Sale of Ownership Percentage		48.00%
Clean Air Act Related to Post Combustion Controls [Member] \| Public Service Company of New Mexico [Member] \| Four Corners [Member]
Public Utilities, Commitments And Contingencies [Line Items]
Public Utilities, Number of Compliance alternatives			2
Public Utilities, Plant Requirement to Meet NOx emissions Limit \| lbsofnox / mmbtu	0.015
Public Utilities, Plant Requirement to Meet Opacity Limit, Percentage	20.00%
Public Utilities, Rule Imposes Opacity Limitation on Certain Fugitive Dust Emissions From Coal and Material Handling Operations	20.00%
Loss Contingency, Estimate of Possible Loss \| $	$ 91.8
Clean Air Act Related to Post Combustion Controls [Member] \| Public Service Company of New Mexico [Member] \| Four Corners Units 4 and 5 (Coal) [Member]
Public Utilities, Commitments And Contingencies [Line Items]
Public Utilities, Ownership Percentage	13.00%