Leases (Tables)

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Estimated future minimum lease payments for Pinnacle West's and APS's operating leases, excluding purchased power agreements

Estimated future minimum lease payments for Pinnacle West’s and APS’s operating leases, excluding purchased power agreements, are approximately as follows (dollars in millions):

Year	Pinnacle West Consolidated		APS
2015	$	18	$	15
2016	6		6
2017	5		5
2018	4		4
2019	3		3
Thereafter	63		62
Total future lease commitments	$	99	$	95