CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
PROPERTY, PLANT AND EQUIPMENT (Notes 1, 6 and 9)
Accumulated depreciation of Palo Verde sale leaseback	$ 229,795	$ 225,925
Accumulated amortization on intangible assets	489,538	439,703
Accumulated amortization on nuclear fuel	143,554	146,057
EQUITY
Common stock, par value
Common stock, authorized shares	150,000,000us-gaap_CommonStockSharesAuthorized	150,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued shares	110,649,762us-gaap_CommonStockSharesIssued	110,280,703us-gaap_CommonStockSharesIssued
Treasury stock at cost, shares	78,400us-gaap_TreasuryStockShares	98,944us-gaap_TreasuryStockShares
ARIZONA PUBLIC SERVICE COMPANY
PROPERTY, PLANT AND EQUIPMENT (Notes 1, 6 and 9)
Accumulated depreciation of Palo Verde sale leaseback	229,795	225,925
Accumulated amortization on intangible assets	483,538	439,703
Accumulated amortization on nuclear fuel	$ 143,554	$ 146,057

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Face amount per share of no-par value common stock.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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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.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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