CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (APSC) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 346,950	$ 357,708
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	370,107	350,762
Deferred fuel and purchased power	30,965	50,020
Deferred fuel and purchased power amortization	(121,018)	(95,926)
Allowance for equity funds used during construction	(18,697)	(16,417)
Deferred income taxes	131,582	281,486
Change in mark-to-market valuations	1,861	3,716
Changes in current assets and liabilities:
Customer and other receivables	(47,410)	(103,973)
Accrued unbilled revenues	(80,877)	(69,035)
Materials, supplies and fossil fuel	(25,532)	19,011
Other current assets	(1,581)	(6,027)
Accounts payable	29,340	36,687
Other current liabilities	30,300	6,738
Change in margin and collateral accounts - assets	33,591	(4,336)
Change in margin and collateral accounts - liabilities	85,785	(143,725)
Change in unrecognized tax benefits	12,123	(72,649)
Change in other long-term assets	(10,678)	(59,382)
Change in other long-term liabilities	74,565	17,636
Net cash flow provided by operating activities	920,506	569,500
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(643,261)	(552,707)
Contributions in aid of construction	36,351	25,258
Allowance for borrowed funds used during construction	(14,371)	(12,553)
Proceeds from sale of life insurance policies	55,444
Proceeds from nuclear decommissioning trust sales	405,637	424,255
Investment in nuclear decommissioning trust	(417,957)	(442,567)
Other	(2,346)	9,621
Net cash flow used for investing activities	(534,292)	(377,219)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	470,353
Repayment of long-term debt	(228,457)	(84,529)
Dividends paid on common stock	(166,197)	(161,722)
Noncontrolling interests	(2,610)	(3,286)
Net cash flow provided by financing activities	68,310	(141,744)
NET INCREASE IN CASH AND CASH EQUIVALENTS	454,524	50,537
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	110,188	145,378
CASH AND CASH EQUIVALENTS AT END OF PERIOD	564,712	195,915
Cash paid during the period for:
Income taxes, net of (refunds)	5,676	(22,165)
Interest, net of amounts capitalized	163,250	167,576
ARIZONA PUBLIC SERVICE COMPANY
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	342,051	342,886
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	369,999	349,267
Deferred fuel and purchased power	30,965	50,020
Deferred fuel and purchased power amortization	(121,018)	(95,926)
Allowance for equity funds used during construction	(18,697)	(16,417)
Deferred income taxes	135,789	218,575
Change in mark-to-market valuations	1,861	3,716
Changes in current assets and liabilities:
Customer and other receivables	(50,147)	(93,394)
Accrued unbilled revenues	(80,877)	(69,035)
Materials, supplies and fossil fuel	(25,532)	19,011
Other current assets	(3,836)	(9,968)
Accounts payable	42,257	37,150
Accrued taxes	86,032	16,141
Other current liabilities	18,931	2,124
Change in margin and collateral accounts - assets	33,591	(4,336)
Change in margin and collateral accounts - liabilities	85,785	(143,725)
Change in unrecognized tax benefits	12,839	(72,217)
Change in other long-term assets	(10,198)	(60,775)
Change in other long-term liabilities	83,301	32,686
Net cash flow provided by operating activities	933,096	505,783
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(637,181)	(552,331)
Contributions in aid of construction	36,351	25,258
Allowance for borrowed funds used during construction	(14,371)	(12,254)
Proceeds from sale of life insurance policies	44,183
Proceeds from nuclear decommissioning trust sales	405,637	424,255
Investment in nuclear decommissioning trust	(417,957)	(442,567)
Other	(2,346)	9,621
Net cash flow used for investing activities	(585,684)	(548,018)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	295,353
Repayment of long-term debt	(13,457)	(9,538)
Equity infusion		252,833
Dividends paid on common stock	(171,600)	(156,300)
Noncontrolling interests	(2,610)	(3,286)
Net cash flow provided by financing activities	107,686	83,709
NET INCREASE IN CASH AND CASH EQUIVALENTS	455,098	41,474
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	99,937	120,798
CASH AND CASH EQUIVALENTS AT END OF PERIOD	555,035	162,272
Cash paid during the period for:
Income taxes, net of (refunds)	7,493	76,364
Interest, net of amounts capitalized	$ 158,011	$ 157,385