Other Income and Other Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other income:
Interest income	$ 884	$ 493	$ 1,010
Debt return on the purchase of Four Corners units 4 & 5			8,386
Miscellaneous	17	128	212
Total other income	901	621	9,608
Other expense:
Non-operating costs	(9,235)	(11,292)	(9,657)
Investment losses — net	(1,747)	(2,080)	(9,426)
Miscellaneous	(4,355)	(4,451)	(2,663)
Total other expense	(15,337)	(17,823)	(21,746)
ARIZONA PUBLIC SERVICE COMPANY
Other income:
Interest income	261	163	689
Debt return on the purchase of Four Corners units 4 & 5	0	0	8,386
Gain on disposition of property	5,745	716	1,197
Miscellaneous	2,601	1,955	1,023
Total other income	8,607	2,834	11,295
Other expense:
Non-operating costs	(11,034)	(11,648)	(10,397)
Loss on disposition of property	(1,246)	(2,219)	(615)
Miscellaneous	(5,234)	(5,152)	(2,391)
Total other expense	$ (17,514)	$ (19,019)	$ (13,403)