ARIZONA PUBLIC SERVICE COMPANY - CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
PROPERTY, PLANT AND EQUIPMENT
Plant in service and held for future use	$ 25,262,439	$ 24,211,167
Accumulated depreciation and amortization	(8,877,815)	(8,408,040)
Net	16,384,624	15,803,127
Construction work in progress	1,713,379	1,724,004
Palo Verde sale leaseback, net of accumulated depreciation (Note 6)	83,524	86,426
Intangible assets, net of accumulated amortization	586,559	267,110
Nuclear fuel, net of accumulated amortization	112,135	99,490
Total property, plant and equipment	18,880,221	17,980,157
INVESTMENTS AND OTHER ASSETS
Nuclear decommissioning trusts (Notes 11 and 12)	1,300,012	1,201,246
Other special use funds (Notes 11 and 12)	387,499	362,781
Other assets	122,359	102,845
Total investments and other assets	1,809,870	1,666,872
CURRENT ASSETS
Cash and cash equivalents	49,171	4,955
Customer and other receivables	839,094	513,892
Accrued unbilled revenues (Note 2)	261,841	167,553
Allowance for doubtful accounts (Note 2)	(18,347)	(22,433)
Materials and supplies (at average cost)	473,847	444,344
Fossil fuel (at average cost)	54,193	49,203
Assets from risk management activities (Note 7)	641	6,808
Deferred fuel and purchased power regulatory asset (Note 4)	367,274	463,195
Other regulatory assets (Note 4)	150,093	162,562
Other current assets	86,759	101,417
Total current assets	2,264,566	1,926,967
DEFERRED DEBITS
Regulatory assets (Note 4)	1,345,777	1,390,279
Operating lease right-of-use assets (Note 14)	1,599,800	1,309,975
Assets for pension and other postretirement benefits (Note 5)	351,546	323,438
Other	57,774	63,465
Total deferred debits	3,354,897	3,087,157
TOTAL ASSETS	26,309,554	24,661,153
CAPITALIZATION
Retained earnings	3,882,081	3,466,317
Accumulated other comprehensive loss (Note 13)	(32,814)	(33,144)
Total shareholder equity	6,616,581	6,177,664
Noncontrolling interests (Note 6)	109,489	107,198
Total equity	6,726,070	6,284,862
Long-term debt less current maturities (Note 3)	8,056,318	7,540,622
CURRENT LIABILITIES
Short-term borrowings (Note 3)	623,500	609,500
Accounts payable	429,478	442,455
Accrued taxes	341,640	166,833
Accrued interest	83,910	72,916
Common dividends payable	0	99,813
Customer deposits	41,976	42,037
Liabilities from risk management activities (Note 7)	79,617	80,913
Liabilities for asset retirements (Note 15)	52,185	28,550
Operating lease liabilities (Note 14)	119,080	67,883
Regulatory liabilities (Note 4)	243,714	209,923
Other current liabilities	182,246	193,524
Total current liabilities	3,197,346	2,889,347
DEFERRED CREDITS AND OTHER
Deferred income taxes	2,453,968	2,416,480
Regulatory liabilities (Note 4)	1,809,563	1,965,865
Liabilities for asset retirements (Note 15)	1,099,223	937,451
Liabilities for pension benefits (Note 5)	107,355	112,702
Liabilities from risk management activities (Note 7)	28,915	42,975
Customer advances	601,910	533,580
Coal mine reclamation	187,673	184,007
Deferred investment tax credit	247,456	257,743
Unrecognized tax benefits	44,564	33,861
Operating lease liabilities (Note 14)	1,517,058	1,210,189
Other	232,135	251,469
Total deferred credits and other	8,329,820	7,946,322
COMMITMENTS AND CONTINGENCIES (Note 8)
TOTAL LIABILITIES AND EQUITY	26,309,554	24,661,153
APS
PROPERTY, PLANT AND EQUIPMENT
Plant in service and held for future use	25,259,212	24,207,706
Accumulated depreciation and amortization	(8,874,719)	(8,404,721)
Net	16,384,493	15,802,985
Construction work in progress	1,713,379	1,724,004
Palo Verde sale leaseback, net of accumulated depreciation (Note 6)	83,524	86,426
Intangible assets, net of accumulated amortization	586,404	266,955
Nuclear fuel, net of accumulated amortization	112,135	99,490
Total property, plant and equipment	18,879,935	17,979,860
INVESTMENTS AND OTHER ASSETS
Nuclear decommissioning trusts (Notes 11 and 12)	1,300,012	1,201,246
Other special use funds (Notes 11 and 12)	387,499	362,781
Other assets	48,984	43,625
Total investments and other assets	1,736,495	1,607,652
CURRENT ASSETS
Cash and cash equivalents	48,565	4,549
Customer and other receivables	825,818	510,296
Accrued unbilled revenues (Note 2)	261,841	167,553
Allowance for doubtful accounts (Note 2)	(18,347)	(22,433)
Materials and supplies (at average cost)	473,847	444,344
Fossil fuel (at average cost)	54,193	49,203
Assets from risk management activities (Note 7)	641	6,808
Deferred fuel and purchased power regulatory asset (Note 4)	367,274	463,195
Other regulatory assets (Note 4)	150,093	162,562
Other current assets	67,111	64,311
Total current assets	2,231,036	1,850,388
DEFERRED DEBITS
Regulatory assets (Note 4)	1,345,777	1,390,279
Operating lease right-of-use assets (Note 14)	1,598,625	1,308,611
Assets for pension and other postretirement benefits (Note 5)	344,494	316,606
Other	57,206	63,059
Total deferred debits	3,346,102	3,078,555
TOTAL ASSETS	26,193,568	24,516,455
CAPITALIZATION
Common stock	178,162	178,162
Additional paid-in capital	3,771,696	3,321,696
Retained earnings	4,194,039	3,759,299
Accumulated other comprehensive loss (Note 13)	(16,586)	(17,219)
Total shareholder equity	8,127,311	7,241,938
Noncontrolling interests (Note 6)	109,489	107,198
Total equity	8,236,800	7,349,136
Long-term debt less current maturities (Note 3)	7,189,766	7,041,891
Total capitalization	15,426,566	14,391,027
CURRENT LIABILITIES
Short-term borrowings (Note 3)	600,000	532,850
Current maturities of long-term debt (Note 3)	300,000	250,000
Accounts payable	421,282	433,229
Accrued taxes	356,530	162,288
Accrued interest	72,871	72,548
Common dividends payable	0	99,800
Customer deposits	41,976	42,037
Liabilities from risk management activities (Note 7)	79,617	80,913
Liabilities for asset retirements (Note 15)	52,185	28,550
Operating lease liabilities (Note 14)	118,922	67,608
Regulatory liabilities (Note 4)	243,714	209,923
Other current liabilities	185,821	211,773
Total current liabilities	2,472,918	2,191,519
DEFERRED CREDITS AND OTHER
Deferred income taxes	2,436,742	2,431,697
Regulatory liabilities (Note 4)	1,809,563	1,965,865
Liabilities for asset retirements (Note 15)	1,099,223	937,451
Liabilities for pension benefits (Note 5)	102,540	106,215
Liabilities from risk management activities (Note 7)	28,915	42,975
Customer advances	601,910	533,580
Coal mine reclamation	187,673	184,007
Deferred investment tax credit	247,456	257,743
Unrecognized tax benefits	49,056	33,861
Operating lease liabilities (Note 14)	1,515,828	1,208,857
Other	215,178	231,658
Total deferred credits and other	8,294,084	7,933,909
COMMITMENTS AND CONTINGENCIES (Note 8)
TOTAL LIABILITIES AND EQUITY	$ 26,193,568	$ 24,516,455