CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified		Total	Common Stock	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	ARIZONA PUBLIC SERVICE COMPANY	ARIZONA PUBLIC SERVICE COMPANY Common Stock	ARIZONA PUBLIC SERVICE COMPANY Additional Paid-in Capital	ARIZONA PUBLIC SERVICE COMPANY Retained Earnings	ARIZONA PUBLIC SERVICE COMPANY Accumulated Other Comprehensive Income (Loss)	ARIZONA PUBLIC SERVICE COMPANY Noncontrolling Interests
Balance at Dec. 31, 2011		$ 3,930,586	$ 2,444,247	$ (4,717)	$ 1,534,483	$ (152,163)	$ 108,736	$ 4,051,406	$ 178,162	$ 2,379,696	$ 1,510,740	$ (125,591)	$ 108,399
Balance (in shares) at Dec. 31, 2011			109,356,974	111,161					71,264,947
Increase (Decrease) in Shareholders' Equity
Net income		413,164			381,542		31,622	427,110			395,497		31,613
Other comprehensive income		38,155				38,155		36,496				36,496
Dividends, common stock		(291,923)			(291,923)			(282,000)			(282,000)
Issuance of common stock		22,676	22,676
Issuance of common stock (in shares)			480,983
Purchase of treasury stock	[1]	(4,607)		(4,607)
Purchase of treasury stock (in shares)	[1]			(89,629)
Stock-based compensation and other		5,113		5,113
Stock-based compensation and other (in shares)				105,598
Net capital activities by noncontrolling interests		(10,875)					(10,875)	(10,529)					(10,529)
Balance at Dec. 31, 2012		4,102,289	2,466,923	(4,211)	1,624,102	(114,008)	129,483	4,222,483	178,162	2,379,696	1,624,237	(89,095)	129,483
Balance (in shares) at Dec. 31, 2012			109,837,957	95,192					71,264,947
Increase (Decrease) in Shareholders' Equity
Net income		439,966			406,074		33,892	458,861			424,969		33,892
Other comprehensive income		35,955				35,955		35,723				35,723
Dividends, common stock		(244,903)			(244,903)			(244,800)			(244,800)
Other								(8)			(8)
Issuance of common stock		24,635	24,635
Issuance of common stock (in shares)			442,746
Purchase of treasury stock	[1]	(9,727)		(9,727)
Purchase of treasury stock (in shares)	[1]			(174,290)
Stock-based compensation and other		9,630		9,630
Stock-based compensation and other (in shares)				170,538
Net capital activities by noncontrolling interests		(17,385)					(17,385)	(17,385)					(17,385)
Balance at Dec. 31, 2013		4,340,460	2,491,558	(4,308)	1,785,273	(78,053)	145,990	4,454,874	178,162	2,379,696	1,804,398	(53,372)	145,990
Balance (in shares) at Dec. 31, 2013		110,280,703	110,280,703	98,944					71,264,947
Increase (Decrease) in Shareholders' Equity
Net income		423,696			397,595		26,101	447,320			421,219		26,101
Other comprehensive income		9,912				9,912		5,039				5,039
Dividends, common stock		(256,803)			(256,803)			(256,900)			(256,900)
Other								1			1
Issuance of common stock		21,412	21,412
Issuance of common stock (in shares)			369,059
Purchase of treasury stock	[1]	(7,893)		(7,893)
Purchase of treasury stock (in shares)	[1]			(139,746)
Stock-based compensation and other		8,800		8,800
Stock-based compensation and other (in shares)				160,290
Net capital activities by noncontrolling interests		(20,482)					(20,482)	(20,482)					(20,482)
Balance at Dec. 31, 2014		$ 4,519,102	$ 2,512,970	$ (3,401)	$ 1,926,065	$ (68,141)	$ 151,609	$ 4,629,852	$ 178,162	$ 2,379,696	$ 1,968,718	$ (48,333)	$ 151,609
Balance (in shares) at Dec. 31, 2014		110,649,762	110,649,762	78,400					71,264,947

[1] Primarily represents shares of common stock withheld from certain stock awards for tax purposes.