CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (APSC) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 32,836	$ (481)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	124,344	118,487
Deferred fuel and purchased power	31,194	46,754
Deferred fuel and purchased power amortization	1,122	(24,514)
Allowance for equity funds used during construction	(6,864)	(4,756)
Deferred income taxes	12,163	(1,989)
Change in derivative instruments fair value	333	1,985
Changes in current assets and liabilities:
Customer and other receivables	3,931	52,264
Accrued unbilled revenues	4,698	20,511
Materials, supplies and fossil fuel	(9,386)	(13,753)
Other current assets	(2,525)	(3,502)
Accounts payable	11,925	(39,355)
Accrued taxes and income taxes receivable - net	39,182	37,398
Other current liabilities	(62,636)	(39,804)
Change in margin and collateral accounts - assets	933	(1,853)
Change in margin and collateral accounts - liabilities	24,205	(32,950)
Change in other long-term assets	(31,202)	(21,469)
Change in other long-term liabilities	37,904	22,362
Net cash flow provided by operating activities	212,157	115,335
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(182,859)	(240,973)
Contributions in aid of construction	14,912	13,871
Allowance for borrowed funds used during construction	(3,990)	(3,151)
Proceeds from nuclear decommissioning trust sales	135,240	92,047
Investment in nuclear decommissioning trust	(139,553)	(96,360)
Other	(470)	(533)
Net cash flow used for investing activities	(176,720)	(235,099)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	104,307	319,081
Short-term borrowings - net	(92,175)	216,600
Repayment of long-term debt		(375,727)
Dividends paid on common stock	(58,067)	(55,595)
Net cash flow provided by (used for) financing activities	(36,530)	106,891
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(1,093)	(12,873)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	26,202	33,583
CASH AND CASH EQUIVALENTS AT END OF PERIOD	25,109	20,710
Cash paid during the period for:
Interest, net of amounts capitalized	49,038	62,892
Significant non-cash investing and financing activities:
Accrued capital expenditures	6,575	13,622
ARIZONA PUBLIC SERVICE COMPANY
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	34,434	3,662
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	124,320	118,463
Deferred fuel and purchased power	31,194	46,754
Deferred fuel and purchased power amortization	1,122	(24,514)
Allowance for equity funds used during construction	(6,864)	(4,756)
Deferred income taxes	12,756	(2,044)
Change in derivative instruments fair value	333	1,985
Changes in current assets and liabilities:
Customer and other receivables	2,464	52,416
Accrued unbilled revenues	4,698	20,511
Materials, supplies and fossil fuel	(9,386)	(13,753)
Other current assets	(2,526)	(3,847)
Accounts payable	12,892	(39,812)
Accrued taxes and income taxes receivable - net	43,323	42,039
Other current liabilities	(58,419)	(53,449)
Change in margin and collateral accounts - assets	933	(1,853)
Change in margin and collateral accounts - liabilities	24,205	(32,950)
Change in other long-term assets	(29,022)	(21,656)
Change in other long-term liabilities	41,760	27,557
Net cash flow provided by operating activities	228,217	114,753
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(182,859)	(240,973)
Contributions in aid of construction	14,912	13,871
Allowance for borrowed funds used during construction	(3,990)	(3,151)
Proceeds from nuclear decommissioning trust sales	135,240	92,047
Investment in nuclear decommissioning trust	(139,553)	(96,360)
Other	(470)	(533)
Net cash flow used for investing activities	(176,720)	(235,099)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	104,307	319,081
Short-term borrowings - net	(92,175)	216,600
Repayment of long-term debt		(375,727)
Dividends paid on common stock	(59,800)	(57,400)
Net cash flow provided by (used for) financing activities	(47,668)	102,554
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	3,829	(17,792)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	3,499	19,873
CASH AND CASH EQUIVALENTS AT END OF PERIOD	7,328	2,081
Cash paid during the period for:
Interest, net of amounts capitalized	48,146	61,701
Significant non-cash investing and financing activities:
Accrued capital expenditures	$ 6,575	$ 13,622