Consolidation and Nature of Operations (Tables)

6 Months Ended

Jun. 30, 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):

	Six Months Ended   June 30,
	2018		2017
Cash paid during the period for:
Income taxes, net of refunds	$	10,032	$	2,062
Interest, net of amounts capitalized	104,249		94,870
Significant non-cash investing and financing activities:
Accrued capital expenditures	$	65,995	$	80,517
Dividends accrued but not yet paid	77,821		73,113