CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net unrealized gain, tax expense	$ 80	$ 16	$ 626	$ 489
Reclassification of net realized loss, tax benefit	392	556	191	923
Pension and other postretirement benefits activity, tax benefit (expense)	439	74	(206)	(793)
Arizona Public Service Company
Net unrealized gain, tax expense	80	16	626	489
Reclassification of net realized loss, tax benefit	392	556	191	923
Pension and other postretirement benefits activity, tax benefit (expense)	$ 403	$ 47	$ (156)	$ (722)