CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (APSC) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net unrealized loss, tax benefit	$ 47	$ 10,055	$ 14,817	$ 16,113
Reclassification of net realized loss, tax benefit	19,543	23,361	34,361	39,213
Pension and other postretirement benefits activity, tax expense	640	489	1,797	1,853
ARIZONA PUBLIC SERVICE COMPANY
Net unrealized loss, tax benefit	47	10,057	14,820	16,116
Reclassification of net realized loss, tax benefit	19,547	23,366	34,367	39,221
Pension and other postretirement benefits activity, tax expense	$ 568	$ 431	$ 1,409	$ 1,794