CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING REVENUES	$ 3,495,443	$ 3,491,632	$ 3,454,628
OPERATING EXPENSES
Fuel and purchased power	1,101,298	1,179,829	1,095,709
Operations and maintenance	868,377	908,025	924,727
Depreciation and amortization	494,422	417,358	415,708
Taxes other than income taxes	171,812	172,295	164,167
Other expenses	4,932	2,883	7,994
Total	2,640,841	2,680,390	2,608,305
OPERATING INCOME	854,602	811,242	846,323
OTHER INCOME (DEDUCTIONS)
Allowance for equity funds used during construction (Note 1)	35,215	30,790	25,581
Other income (Note 17)	621	9,608	1,704
Other expense (Note 17)	(17,823)	(21,746)	(16,024)
Total	18,013	18,652	11,261
INTEREST EXPENSE
Interest charges	194,964	200,950	201,888
Allowance for borrowed funds used during construction (Note 1)	(16,259)	(15,457)	(14,861)
Total	178,705	185,493	187,027
INCOME BEFORE INCOME TAXES	693,910	644,401	670,557
INCOME TAXES (Note 4)	237,720	220,705	230,591
NET INCOME	456,190	423,696	439,966
Less: Net income attributable to noncontrolling interests (Note 18)	18,933	26,101	33,892
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 437,257	$ 397,595	$ 406,074
Weighted Average common shares outstanding — basic (in shares)	111,026	110,626	109,984
Weighted Average common shares outstanding — diluted (in shares)	111,552	111,178	110,806
EARNINGS PER WEIGHTED-AVERAGE COMMON SHARE OUTSTANDING
Net income attributable to common shareholders - basic (in dollars per share)	$ 3.94	$ 3.59	$ 3.69
Net income attributable to common shareholders — diluted (in dollars per share)	$ 3.92	$ 3.58	$ 3.66
ARIZONA PUBLIC SERVICE COMPANY
ELECTRIC OPERATING REVENUES	$ 3,492,357	$ 3,488,946	$ 3,451,251
OPERATING EXPENSES
Fuel and purchased power	1,101,298	1,179,829	1,095,709
Operations and maintenance	853,135	882,442	897,824
Depreciation and amortization	494,298	417,264	415,612
Taxes other than income taxes	171,499	171,583	163,377
Income taxes (Note 4)	260,143	245,036	256,864
Total	2,880,373	2,896,154	2,829,386
OPERATING INCOME	611,984	592,792	621,865
OTHER INCOME (DEDUCTIONS)
Income taxes (Note 4)	14,302	7,676	11,769
Allowance for equity funds used during construction (Note 1)	35,215	30,790	25,581
Other income (Note 17)	2,834	11,295	3,896
Other expense (Note 17)	(19,019)	(13,403)	(20,449)
Total	33,332	36,358	20,797
INTEREST EXPENSE
Interest on long-term debt	180,123	186,323	188,011
Interest on short-term borrowings	7,376	6,796	6,605
Debt discount, premium and expense	4,793	4,168	4,046
Allowance for borrowed funds used during construction (Note 1)	(16,183)	(15,457)	(14,861)
Total	176,109	181,830	183,801
INCOME TAXES (Note 4)	245,841	237,360	245,095
NET INCOME	469,207	447,320	458,861
Less: Net income attributable to noncontrolling interests (Note 18)	18,933	26,101	33,892
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 450,274	$ 421,219	$ 424,969