CONDENSED CONSOLIDATED BALANCE SHEETS (APSC) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
PROPERTY, PLANT AND EQUIPMENT
Plant in service and held for future use	$ 14,048,957	$ 13,753,971
Accumulated depreciation and amortization	(4,843,868)	(4,709,991)
Net	9,205,089	9,043,980
Construction work in progress	458,441	496,745
Palo Verde sale leaseback, net of accumulated depreciation (Note 7)	130,929	132,864
Intangible assets, net of accumulated amortization	163,727	170,571
Nuclear fuel, net of accumulated amortization	159,493	118,098
Total property, plant and equipment	10,117,679	9,962,258
INVESTMENTS AND OTHER ASSETS
Nuclear decommissioning trust (Note 15)	544,933	513,733
Assets from risk management activities (Note 8)	43,526	49,322
Other assets	64,800	64,588
Total investments and other assets	653,259	627,643
CURRENT ASSETS
Cash and cash equivalents	11,228	33,583
Customer and other receivables	316,722	284,183
Accrued unbilled revenues	168,450	125,239
Allowance for doubtful accounts	(3,302)	(3,748)
Materials and supplies (at average cost)	217,222	204,387
Fossil fuel (at average cost)	30,177	22,000
Deferred fuel and purchased power regulatory asset (Note 3)		27,549
Other regulatory assets (Note 3)	54,857	69,072
Deferred income taxes	87,690	130,571
Income tax receivable	885	6,466
Assets from risk management activities (Note 8)	29,991	30,264
Other current assets	33,496	26,904
Total current assets	947,416	956,470
DEFERRED DEBITS
Regulatory assets (Note 3)	1,283,322	1,352,079
Income tax receivable (Note 6)	69,508	68,633
Other	143,223	143,935
Total deferred debits	1,496,053	1,564,647
TOTAL ASSETS	13,214,407	13,111,018
CAPITALIZATION
Common stock	2,452,094	2,439,530
Retained earnings	1,476,259	1,534,483
Accumulated other comprehensive loss:
Pension and other postretirement benefits	(63,675)	(65,447)
Derivative instruments	(86,643)	(86,716)
Total shareholder equity	3,778,035	3,821,850
Noncontrolling interests (Note 7)	121,302	108,736
Total equity	3,899,337	3,930,586
Long-term debt less current maturities	3,313,992	2,953,507
Palo Verde sale leaseback lessor notes less current maturities (Note 7)	57,420	65,547
CURRENT LIABILITIES
Short-term borrowings	109,000
Current maturities of long-term debt	57,962	477,435
Accounts payable	316,329	326,987
Accrued taxes (Note 6)	133,766	120,289
Accrued interest	61,451	54,872
Common dividends payable	57,479
Customer deposits	74,575	72,176
Liabilities from risk management activities (Note 8)	64,442	53,968
Deferred fuel and purchased power regulatory liability (Note 3)	325
Other regulatory liabilities (Note 3)	89,433	88,362
Other current liabilities	139,561	148,616
Total current liabilities	1,104,323	1,342,705
DEFERRED CREDITS AND OTHER
Deferred income taxes	1,946,540	1,925,388
Regulatory liabilities (Note 3)	738,693	737,332
Liability for asset retirements	289,641	279,643
Liabilities for pension and other postretirement benefits (Note 4)	1,243,256	1,268,910
Liabilities from risk management activities (Note 8)	108,554	82,495
Customer advances	111,655	116,805
Coal mine reclamation	118,374	117,896
Unrecognized tax benefits (Note 6)	72,977	72,270
Other	209,645	217,934
Total deferred credits and other	4,839,335	4,818,673
COMMITMENTS AND CONTINGENCIES (SEE NOTES)
TOTAL LIABILITIES AND EQUITY	13,214,407	13,111,018
ARIZONA PUBLIC SERVICE COMPANY
PROPERTY, PLANT AND EQUIPMENT
Plant in service and held for future use	14,045,091	13,750,105
Accumulated depreciation and amortization	(4,840,292)	(4,706,462)
Net	9,204,799	9,043,643
Construction work in progress	458,441	496,745
Palo Verde sale leaseback, net of accumulated depreciation (Note 7)	130,929	132,864
Intangible assets, net of accumulated amortization	163,572	170,416
Nuclear fuel, net of accumulated amortization	159,493	118,098
Total property, plant and equipment	10,117,234	9,961,766
INVESTMENTS AND OTHER ASSETS
Nuclear decommissioning trust (Note 15)	544,933	513,733
Assets from risk management activities (Note 8)	43,526	49,322
Other assets	31,076	30,551
Total investments and other assets	619,535	593,606
CURRENT ASSETS
Cash and cash equivalents	2,784	19,873
Customer and other receivables	314,230	280,100
Accrued unbilled revenues	168,450	125,239
Allowance for doubtful accounts	(3,302)	(3,748)
Materials and supplies (at average cost)	217,222	204,387
Fossil fuel (at average cost)	30,177	22,000
Deferred fuel and purchased power regulatory asset (Note 3)		27,549
Other regulatory assets (Note 3)	54,857	69,072
Deferred income taxes	68,622	111,503
Income tax receivable		2,869
Assets from risk management activities (Note 8)	29,991	30,264
Other current assets	33,468	26,486
Total current assets	916,499	915,594
DEFERRED DEBITS
Regulatory assets (Note 3)	1,283,322	1,352,079
Income tax receivable (Note 6)	69,903	69,028
Unamortized debt issue costs	23,611	21,181
Other	116,293	118,983
Total deferred debits	1,493,129	1,561,271
TOTAL ASSETS	13,146,397	13,032,237
CAPITALIZATION
Common stock	178,162	178,162
Additional paid-in capital	2,379,696	2,379,696
Retained earnings	1,469,162	1,510,740
Accumulated other comprehensive loss:
Pension and other postretirement benefits	(37,597)	(38,886)
Derivative instruments	(86,632)	(86,705)
Total shareholder equity	3,902,791	3,943,007
Noncontrolling interests (Note 7)	121,302	108,399
Total equity	4,024,093	4,051,406
Long-term debt less current maturities	3,188,992	2,828,507
Palo Verde sale leaseback lessor notes less current maturities (Note 7)	57,420	65,547
Total capitalization	7,270,505	6,945,460
CURRENT LIABILITIES
Short-term borrowings	109,000
Current maturities of long-term debt	57,962	477,435
Accounts payable	311,596	322,047
Accrued taxes (Note 6)	134,103	113,930
Accrued interest	61,065	54,611
Common dividends payable	57,500
Customer deposits	74,575	72,176
Liabilities from risk management activities (Note 8)	64,442	53,968
Deferred fuel and purchased power regulatory liability (Note 3)	325
Other regulatory liabilities (Note 3)	89,433	88,362
Other current liabilities	127,352	140,185
Total current liabilities	1,087,353	1,322,714
DEFERRED CREDITS AND OTHER
Deferred income taxes	1,976,973	1,952,608
Regulatory liabilities (Note 3)	738,693	737,332
Liability for asset retirements	289,641	279,643
Liabilities for pension and other postretirement benefits (Note 4)	1,198,943	1,222,542
Liabilities from risk management activities (Note 8)	108,554	82,495
Customer advances	111,655	116,805
Coal mine reclamation	118,374	117,896
Unrecognized tax benefits (Note 6)	72,777	72,073
Other	172,929	182,669
Total deferred credits and other	4,788,539	4,764,063
COMMITMENTS AND CONTINGENCIES (SEE NOTES)
TOTAL LIABILITIES AND EQUITY	$ 13,146,397	$ 13,032,237