CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
NET INCOME	$ 557,813	$ 530,540	$ 507,949
Derivative instruments:
Net unrealized loss, net of tax benefit (expense)	0
Net unrealized loss, net of tax benefit (expense)		(78)	(35)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(1,137)
Reclassification of net realized loss, net of tax benefit		1,527	2,225
Pension and other postretirement benefits activity, net of tax (expense) benefit	(10,525)	4,397	(3,370)
Total other comprehensive income (loss)	(9,388)	5,846	(1,180)
COMPREHENSIVE INCOME	548,425	536,386	506,769
Less: Comprehensive income attributable to noncontrolling interests	19,493	19,493	19,493
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	528,932	516,893	487,276
ARIZONA PUBLIC SERVICE COMPANY
NET INCOME	584,764	589,758	523,802
Derivative instruments:
Net unrealized loss, net of tax benefit (expense)	0
Net unrealized loss, net of tax benefit (expense)		(78)	(35)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(1,137)
Reclassification of net realized loss, net of tax benefit		1,527	2,225
Pension and other postretirement benefits activity, net of tax (expense) benefit	(9,552)	3,465	(3,750)
Total other comprehensive income (loss)	(8,415)	4,914	(1,560)
COMPREHENSIVE INCOME	576,349	594,672	522,242
Less: Comprehensive income attributable to noncontrolling interests	19,493	19,493	19,493
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 556,856	$ 575,179	$ 502,749