Other Income and Other Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other income:
Interest income	$ 493	$ 1,010	$ 1,629
Debt return on the purchase of Four Corners units 4 & 5		8,386	0
Miscellaneous	128	212	75
Total other income	621	9,608	1,704
Other expense:
Non-operating costs	(11,292)	(9,657)	(8,207)
Investment loss - net	(2,080)	(9,426)	(3,711)
Miscellaneous	(4,451)	(2,663)	(4,106)
Total other expense	(17,823)	(21,746)	(16,024)
ARIZONA PUBLIC SERVICE COMPANY
Other income:
Interest income	163	689	1,234
Debt return on the purchase of Four Corners units 4 & 5	0	8,386	0
Investment gains - net	716	1,197	1,024
Miscellaneous	1,955	1,023	1,638
Total other income	2,834	11,295	3,896
Other expense:
Non-operating costs	(11,648)	(10,397)	(9,626)
Asset dispositions	(2,219)	(615)	(4,992)
Miscellaneous	(5,152)	(2,391)	(5,831)
Total other expense	$ (19,019)	$ (13,403)	$ (20,449)