CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
NET INCOME	$ 570,052	$ 557,813	$ 530,540
Derivative instruments:
Net unrealized loss, net of tax benefit (expense)	(2,089)	0	(78)
Reclassification of net realized gain, net of tax expense	592	1,137	1,527
Pension and other postretirement benefits activity, net of tax benefit (expense)	(4,203)	(10,525)	4,397
Total other comprehensive income (loss)	(5,700)	(9,388)	5,846
COMPREHENSIVE INCOME	564,352	548,425	536,386
Less: Comprehensive income attributable to noncontrolling interests	19,493	19,493	19,493
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	544,859	528,932	516,893
ARIZONA PUBLIC SERVICE COMPANY
NET INCOME	587,521	584,764	589,758
Derivative instruments:
Net unrealized loss, net of tax benefit (expense)	(18)	0	(78)
Reclassification of net realized gain, net of tax expense	592	1,137	1,527
Pension and other postretirement benefits activity, net of tax benefit (expense)	(5,970)	(9,552)	3,465
Total other comprehensive income (loss)	(5,396)	(8,415)	4,914
COMPREHENSIVE INCOME	582,125	576,349	594,672
Less: Comprehensive income attributable to noncontrolling interests	19,493	19,493	19,493
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 562,632	$ 556,856	$ 575,179