CONSOLIDATED STATEMENTS OF CASH FLOWS (APSC) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 413,164	$ 366,940	$ 370,209
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	481,262	493,784	472,807
Deferred fuel and purchased power	71,573	69,166	93,631
Deferred fuel and purchased power amortization	(116,716)	(155,157)	(122,481)
Allowance for equity funds used during construction	(22,436)	(23,707)	(22,066)
Deferred income taxes	228,602	176,192	260,411
Change in derivative instruments fair value	(749)	4,064	2,688
Changes in current assets and liabilities:
Customer and other receivables	14,587	40,626	(67,943)
Accrued unbilled revenues	30,394	(21,947)	7,679
Materials, supplies and fossil fuel	(23,043)	(23,398)	12,276
Other current assets	(27,352)	(3,079)	9,375
Accounts payable	(96,600)	58,346	9,125
Accrued taxes and income tax receivable - net	8,693	12,068	24,222
Other current liabilities	23,869	20,358	2,921
Change in margin and collateral accounts - assets	2,216	33,349	(9,937)
Change in margin and collateral accounts - liabilities	137,785	29,731	(88,315)
Change in long-term regulatory liabilities	13,539	37,009	56,801
Change in long-term income tax receivable	(1,756)	(3,530)
Change in unrecognized tax benefits	(2,583)	8,410	(73,621)
Change in other long-term assets	6,872	(41,722)	(47,940)
Change in other long-term liabilities	29,801	58,484	(97,388)
Net cash flow provided by operating activities	1,171,122	1,125,583	750,457
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(889,551)	(884,350)	(748,374)
Contributions in aid of construction	49,876	38,096	32,754
Allowance for borrowed funds used during construction	(14,971)	(18,358)	(16,778)
Proceeds from nuclear decommissioning trust sales	417,603	497,780	560,469
Investment in nuclear decommissioning trust	(434,852)	(513,799)	(584,885)
Proceeds from sale of life insurance policies		55,444
Other	(1,099)	(3,306)	8,576
Net cash flow used for investing activities	(872,994)	(782,007)	(575,900)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	476,081	470,353
Repayment of long-term debt	(654,286)	(655,169)	(106,572)
Short-term borrowings and payments - net	92,175	(16,600)	(137,115)
Dividends paid on common stock	(225,075)	(221,728)	(216,979)
Noncontrolling interests	(10,529)	(10,210)	(11,403)
Net cash flow used for financing activities	(305,509)	(420,181)	(209,747)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(7,381)	(76,605)	(35,190)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	33,583	110,188	145,378
CASH AND CASH EQUIVALENTS AT END OF YEAR	26,202	33,583	110,188
Cash paid during the year for:
Income taxes, net of refunds	2,543	10,324	(23,447)
Interest, net of amounts capitalized	200,923	217,789	221,728
Significant non-cash investing and financing activities:
Accrued capital expenditures	26,208	27,245	19,226
Dividends declared but not paid	59,789
ARIZONA PUBLIC SERVICE COMPANY
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	427,110	363,773	355,826
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	481,168	493,653	471,226
Deferred fuel and purchased power	71,573	69,166	93,631
Deferred fuel and purchased power amortization	(116,716)	(155,157)	(122,481)
Allowance for equity funds used during construction	(22,436)	(23,707)	(22,066)
Deferred income taxes	243,738	168,805	224,095
Change in derivative instruments fair value	(749)	4,064	2,688
Changes in current assets and liabilities:
Customer and other receivables	12,914	34,913	(49,956)
Accrued unbilled revenues	30,394	(21,947)	7,679
Materials, supplies and fossil fuel	(23,043)	(23,398)	12,276
Other current assets	(27,745)	(5,473)	4,718
Accounts payable	(97,395)	73,369	18,066
Accrued taxes and income tax receivable - net	5,050	5,103	(51,620)
Other current liabilities	6,070	18,762	(2,853)
Change in margin and collateral accounts - assets	2,216	33,349	(9,937)
Change in margin and collateral accounts - liabilities	137,785	29,731	(88,315)
Change in long-term regulatory liabilities	13,539	37,009	56,801
Change in long-term income tax receivable	(1,756)	(3,530)
Change in unrecognized tax benefits	(2,583)	9,125	(73,189)
Change in other long-term assets	1,391	(41,788)	(46,118)
Change in other long-term liabilities	34,854	61,990	(85,136)
Net cash flow provided by operating activities	1,175,379	1,127,812	695,335
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(889,551)	(878,546)	(747,967)
Contributions in aid of construction	49,876	38,096	32,754
Allowance for borrowed funds used during construction	(14,971)	(18,358)	(16,479)
Proceeds from nuclear decommissioning trust sales	417,603	497,780	560,469
Investment in nuclear decommissioning trust	(434,852)	(513,799)	(584,885)
Proceeds from sale of life insurance policies		44,183
Other	(1,099)	(3,306)	8,576
Net cash flow used for investing activities	(872,994)	(833,950)	(747,532)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	351,081	295,353
Repayment of long-term debt	(529,286)	(430,169)	(27,694)
Short-term borrowings and payments - net	92,175
Equity infusion			252,833
Dividends paid on common stock	(222,200)	(228,900)	(182,400)
Noncontrolling interests	(10,529)	(10,210)	(11,403)
Net cash flow used for financing activities	(318,759)	(373,926)	31,336
NET DECREASE IN CASH AND CASH EQUIVALENTS	(16,374)	(80,064)	(20,861)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	19,873	99,937	120,798
CASH AND CASH EQUIVALENTS AT END OF YEAR	3,499	19,873	99,937
Cash paid during the year for:
Income taxes, net of refunds	1,196	25,975	81,339
Interest, net of amounts capitalized	196,038	210,995	208,251
Significant non-cash investing and financing activities:
Accrued capital expenditures	26,208	27,245	19,226
Dividends declared but not paid	$ 59,800