CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (APSC) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net unrealized gain (loss), tax benefit (expense)	$ (38)	$ 16,551
Reclassification of net realized loss, tax benefit	3,300	5,728
Pension and other postretirement benefits activity, tax expense	631	631
ARIZONA PUBLIC SERVICE COMPANY
Net unrealized gain (loss), tax benefit (expense)	(38)	16,554
Reclassification of net realized loss, tax benefit	3,300	5,728
Pension and other postretirement benefits activity, tax expense	$ 576	$ 536