APS - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
NET INCOME	$ 518,781	$ 500,826	$ 635,944
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Pension and other postretirement benefits activity, net of tax benefit (expense) of $536, $(6,332), and $(1,990) (Note 7)	(2,422)	21,553	6,840
Total other comprehensive income (loss)	(1,709)	23,426	7,935
COMPREHENSIVE INCOME	517,072	524,252	643,879
Less: Comprehensive income attributable to noncontrolling interests	17,224	17,224	17,224
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	499,848	507,028	626,655
Arizona Public Service Company
NET INCOME	564,561	542,153	649,503
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Pension and other postretirement benefits activity, net of tax benefit (expense) of $536, $(6,332), and $(1,990) (Note 7)	(1,623)	19,284	6,038
Total other comprehensive income (loss)	(1,623)	19,284	6,038
COMPREHENSIVE INCOME	562,938	561,437	655,541
Less: Comprehensive income attributable to noncontrolling interests	17,224	17,224	17,224
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 545,714	$ 544,213	$ 638,317