CONSOLIDATED STATEMENTS OF INCOME (APSC) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
OPERATING EXPENSES
Fuel and purchased power	$ 994,790	$ 1,009,464	$ 1,046,815
Operations and maintenance	884,769	904,286	870,185
Depreciation and amortization	404,336	427,054	414,479
Taxes other than income taxes	159,323	147,408	135,328
Total	2,450,049	2,494,871	2,474,316
OPERATING INCOME	851,755	746,508	714,883
OTHER INCOME (DEDUCTIONS)
Allowance for equity funds used during construction (Note 1)	22,436	23,707	22,066
Other income (Note S-3)	1,606	3,111	6,387
Other expense (Note S-3)	(19,842)	(10,451)	(9,921)
Total	4,200	16,367	18,532
INTEREST EXPENSE
Allowance for borrowed funds used during construction (Note 1)	(14,971)	(18,358)	(16,479)
Total	199,645	223,637	227,695
NET INCOME	413,164	366,940	370,209
Less: Net income attributable to noncontrolling interests (Note 20)	31,622	27,467	20,156
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	381,542	339,473	350,053
ARIZONA PUBLIC SERVICE COMPANY
ELECTRIC OPERATING REVENUES	3,293,489	3,237,241	3,180,807
OPERATING EXPENSES
Fuel and purchased power	994,790	1,009,464	1,046,815
Operations and maintenance	873,916	895,917	860,712
Depreciation and amortization	404,242	426,958	414,336
Income taxes (Notes 4 and S-1)	256,600	204,066	175,440
Taxes other than income taxes	158,412	146,453	134,467
Total	2,687,960	2,682,858	2,631,770
OPERATING INCOME	605,529	554,383	549,037
OTHER INCOME (DEDUCTIONS)
Income taxes (Notes 4 and S-1)	12,204	11,524	4,975
Allowance for equity funds used during construction (Note 1)	22,436	23,707	22,066
Other income (Note S-3)	2,868	5,071	8,956
Other expense (Note S-3)	(21,150)	(15,328)	(15,859)
Total	16,358	24,974	20,138
INTEREST EXPENSE
Interest on long-term debt	198,398	218,981	217,002
Interest on short-term borrowings	7,135	10,345	8,267
Debt discount, premium and expense	4,215	4,616	4,559
Allowance for borrowed funds used during construction (Note 1)	(14,971)	(18,358)	(16,479)
Total	194,777	215,584	213,349
NET INCOME	427,110	363,773	355,826
Less: Net income attributable to noncontrolling interests (Note 20)	31,613	27,524	20,163
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 395,497	$ 336,249	$ 335,663