CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Common 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
Beginning balance (in shares) at Dec. 31, 2018		112,159,896					71,264,947
Beginning balance at Dec. 31, 2018	$ 5,348,705	$ 2,634,265	$ 2,641,183	$ (47,708)	$ 125,790	$ 5,786,797	$ 178,162	$ 2,721,696	$ 2,788,256	$ (27,107)	$ 125,790
Increase (Decrease) in Shareholders' Equity
Equity infusion from Pinnacle West						150,000
Net income	557,813		538,320		19,493	584,764			565,271		19,493
Other comprehensive income (loss)	(9,388)			(9,388)		(8,415)				(8,415)
Dividends on common stock	(341,893)		(341,893)			(341,600)			(341,600)
Capital activities by noncontrolling interests	(22,743)				(22,743)	(22,743)					(22,743)
Ending balance (in shares) at Dec. 31, 2019		112,540,126					71,264,947
Ending balance at Dec. 31, 2019	5,553,188	$ 2,659,561	2,837,610	(57,096)	122,540	5,998,803	$ 178,162	2,721,696	3,011,927	(35,522)	122,540
Increase (Decrease) in Shareholders' Equity
Equity infusion from Pinnacle West						150,000		150,000
Net income	570,052		550,559		19,493	587,521			568,028		19,493
Other comprehensive income (loss)	(5,700)			(5,700)		(5,396)				(5,396)
Dividends on common stock	(363,063)		(363,063)			(363,000)			(363,000)
Capital activities by noncontrolling interests	$ (22,743)				(22,743)	(22,743)					(22,743)
Ending balance (in shares) at Dec. 31, 2020	112,760,051	112,760,051					71,264,947
Ending balance at Dec. 31, 2020	$ 5,752,793	$ 2,677,482	3,025,106	(62,796)	119,290	6,345,185	$ 178,162	2,871,696	3,216,955	(40,918)	119,290
Increase (Decrease) in Shareholders' Equity
Equity infusion from Pinnacle West						150,000		150,000
Net income	635,944		618,720		17,224	649,503			632,279		17,224
Other comprehensive income (loss)	7,935			7,935		6,038				6,038
Dividends on common stock	(379,108)		(379,108)			(379,000)			(379,000)
Capital activities by noncontrolling interests	(21,255)				(21,255)	(21,255)					(21,255)
Other	$ 2		1		1	2			1		1
Ending balance (in shares) at Dec. 31, 2021	113,014,528	113,014,528					71,264,947
Ending balance at Dec. 31, 2021	$ 6,021,460	$ 2,702,743	$ 3,264,719	$ (54,861)	$ 115,260	$ 6,750,473	$ 178,162	$ 3,021,696	$ 3,470,235	$ (34,880)	$ 115,260