CONSOLIDATED BALANCE SHEETS (APSC) (Parenthetical) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
PROPERTY, PLANT AND EQUIPMENT (Notes 1, 6, 9 and 10)
Accumulated depreciation of Palo Verde sale leaseback	$ 218,186	$ 213,094
Accumulated amortization on intangible assets	373,706	330,584
Accumulated amortization on nuclear fuel	113,375	85,270
ARIZONA PUBLIC SERVICE COMPANY
PROPERTY, PLANT AND EQUIPMENT (Notes 1, 6, 9 and 10)
Accumulated depreciation of Palo Verde sale leaseback	218,186	213,094
Accumulated amortization on intangible assets	372,573	329,444
Accumulated amortization on nuclear fuel	$ 113,375	$ 85,270

The accumulated depreciation and amortization related to the asset(s) sold in connection with the property sold to another party and leased back to the seller.

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

-Publisher FASB

-Name Accounting Standards Codification

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

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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