Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases

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
2013	$	21	$	18
2014	17		15
2015	15		12
2016	4		4
2017	3		3
Thereafter	41		40
Total future lease commitments	$	101	$	92