ARIZONA PUBLIC SERVICE COMPANY - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	APS	APS Common Stock	APS Additional Paid-In Capital	APS Retained Earnings	APS Accumulated Other Comprehensive Income (Loss)	APS Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2022		113,247,189					71,264,947
Beginning balance at Dec. 31, 2022	$ 6,159,876	$ 2,724,740	$ 3,360,347	$ (31,435)	$ 111,229	$ 7,052,955	$ 178,162	$ 3,171,696	$ 3,607,464	$ (15,596)	$ 111,229
Increase (Decrease) in Shareholders' Equity
Equity infusion from Pinnacle West						150,000		150,000
Net income	514,498		501,580		12,918	544,335			531,417		12,918
Other comprehensive (loss) income	1,001			1,001		493				493
Dividends on common stock	(195,981)		(195,981)			(196,000)			(196,000)
Capital activities by noncontrolling interests	(10,628)				(10,628)	(10,628)					(10,628)
Other	1		0		1	1			0		1
Ending balance (in shares) at Sep. 30, 2023		113,414,167					71,264,947
Ending balance at Sep. 30, 2023	6,488,205	$ 2,744,501	3,665,946	(30,434)	113,520	7,541,156	$ 178,162	3,321,696	3,942,881	(15,103)	113,520
Beginning balance (in shares) at Jun. 30, 2023		113,386,894					71,264,947
Beginning balance at Jun. 30, 2023	6,076,137	$ 2,736,112	3,267,731	(31,591)	109,213	7,134,586	$ 178,162	3,321,696	3,541,062	(15,547)	109,213
Increase (Decrease) in Shareholders' Equity
Net income	402,520		398,214		4,306	406,123			401,817		4,306
Other comprehensive (loss) income	1,157			1,157		444				444
Other	2		1		1	3			2		1
Ending balance (in shares) at Sep. 30, 2023		113,414,167					71,264,947
Ending balance at Sep. 30, 2023	$ 6,488,205	$ 2,744,501	3,665,946	(30,434)	113,520	7,541,156	$ 178,162	3,321,696	3,942,881	(15,103)	113,520
Beginning balance (in shares) at Dec. 31, 2023	113,537,689	113,537,689					71,264,947
Beginning balance at Dec. 31, 2023	$ 6,284,862	$ 2,752,676	3,466,317	(33,144)	107,198	7,349,136	$ 178,162	3,321,696	3,759,299	(17,219)	107,198
Increase (Decrease) in Shareholders' Equity
Equity infusion from Pinnacle West						450,000		450,000
Net income	628,551		615,633		12,918	647,560			634,642		12,918
Other comprehensive (loss) income	330			330		633				633
Dividends on common stock	(199,868)		(199,868)			(199,900)			(199,900)
Capital activities by noncontrolling interests	(10,628)				(10,628)	(10,628)					(10,628)
Other	$ 1		(1)		1	(1)			(2)		1
Ending balance (in shares) at Sep. 30, 2024	113,735,926	113,735,926					71,264,947
Ending balance at Sep. 30, 2024	$ 6,726,070	$ 2,774,505	3,882,081	(32,814)	109,489	8,236,800	$ 178,162	3,771,696	4,194,039	(16,586)	109,489
Beginning balance (in shares) at Jun. 30, 2024		113,711,763					71,264,947
Beginning balance at Jun. 30, 2024	6,316,322	$ 2,764,511	3,487,113	(33,294)	105,183	7,824,320	$ 178,162	3,771,696	3,786,315	(17,036)	105,183
Increase (Decrease) in Shareholders' Equity
Net income	399,272		394,966		4,306	412,030			407,724		4,306
Other comprehensive (loss) income	480			480		450				450
Other	$ 2		2		0
Ending balance (in shares) at Sep. 30, 2024	113,735,926	113,735,926					71,264,947
Ending balance at Sep. 30, 2024	$ 6,726,070	$ 2,774,505	$ 3,882,081	$ (32,814)	$ 109,489	$ 8,236,800	$ 178,162	$ 3,771,696	$ 4,194,039	$ (16,586)	$ 109,489