Other Income and Other Expense (APSC) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Other income:
Interest income	$ 467	$ 107	$ 1,176	$ 712
Miscellaneous	2	70	51	225
Total other income	469	177	1,227	937
Other expense:
Non-operating costs	(1,990)	(2,389)	(3,923)	(4,239)
Miscellaneous	(148)	(222)	(1,855)	(2,386)
Total other expense	(2,234)	(2,669)	(5,986)	(6,737)
ARIZONA PUBLIC SERVICE COMPANY
Other income:
Interest income	403	77	1,059	184
Miscellaneous	545	941	1,232	1,344
Total other income	948	1,018	2,291	1,528
Other expense:
Non-operating costs	(2,285)	(2,941)	(4,605)	(4,682)
Asset dispositions	(1,397)	(195)	(2,661)	(418)
Miscellaneous	(1,162)	(857)	(3,874)	(3,517)
Total other expense	$ (4,844)	$ (3,993)	$ (11,140)	$ (8,617)