Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of earnings per weighted average common share outstanding

The following table presents the calculation of Pinnacle West’s basic and diluted earnings per share (in thousands, except per share amounts):

	2020		2019		2018
Net income attributable to common shareholders	$	550,559	$	538,320	$	511,047
Weighted average common shares outstanding — basic	112,666		112,443		112,129
Net effect of dilutive securities:
Contingently issuable performance shares and restricted stock units	276		315		421
Weighted average common shares outstanding — diluted	112,942		112,758		112,550
Earnings per weighted-average common share outstanding
Net income attributable to common shareholders — basic	$	4.89	$	4.79	$	4.56
Net income attributable to common shareholders — diluted	$	4.87	$	4.77	$	4.54