CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net unrealized gain (loss), tax benefit (expense)	$ 96	$ 58	$ (392)	$ (566)
Reclassification of net realized loss, tax benefit	567	3,833	1,490	6,417
Pension and other postretirement benefits activity, tax expense	553	3,852	1,345	3,724
Arizona Public Service Company
Net unrealized gain (loss), tax benefit (expense)	96	58	(392)	(566)
Reclassification of net realized loss, tax benefit	567	3,833	1,490	6,417
Pension and other postretirement benefits activity, tax expense	$ 553	$ 474	$ 1,275	$ 252