Consolidation and Nature of Operations (Tables)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of supplemental cash flow information

The following table summarizes supplemental Pinnacle West cash flow information (dollars in thousands):

	Three Months Ended   March 31,
	2018		2017
Cash paid (received) during the period for:
Income taxes, net of refunds	$	—	$	(2	)
Interest, net of amounts capitalized	56,026		54,280
Significant non-cash investing and financing activities:
Accrued capital expenditures	$	86,991	$	79,306