Leases (Tables)

12 Months Ended

Dec. 31, 2018

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 thousands):

Year	Pinnacle West Consolidated		APS
2019	$	13,747	$	13,411
2020	12,428		12,143
2021	9,478		9,282
2022	6,513		6,321
2023	5,359		5,171
Thereafter	42,236		40,656
Total future lease commitments	$	89,761	$	86,984