Other Income and Other Expense (APSC) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other income:
Interest income	$ 107	$ 543	$ 712	$ 935
Investment gains - net		12		1,307
Miscellaneous	70	2	225	5
Total other income	177	557	937	2,247
Other expense:
Non-operating costs	(2,389)	(1,629)	(4,239)	(3,119)
Miscellaneous	(222)	(1,557)	(2,386)	(1,808)
Total other expense	(2,669)	(3,186)	(6,737)	(4,927)
ARIZONA PUBLIC SERVICE COMPANY
Other income:
Interest income	77	89	184	219
Investment gains - net		268		1,418
Miscellaneous	941	876	1,344	1,574
Total other income	1,018	1,233	1,528	3,211
Other expense:
Non-operating costs	(2,941)	(2,400)	(4,682)	(4,214)
Asset dispositions	(195)		(418)	(823)
Miscellaneous	(857)	(2,251)	(3,517)	(3,206)
Total other expense	$ (3,993)	$ (4,651)	$ (8,617)	$ (8,243)