Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2015

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 for the three and six months ended June 30, 2015 and 2014 (in thousands, except per share amounts):

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2015		2014		2015		2014
Net income attributable to common shareholders	$	122,902	$	132,458	$	139,024	$	148,224
Weighted average common shares outstanding — basic	110,986		110,565		110,958		110,546
Net effect of dilutive securities:
Contingently issuable performance shares and restricted stock units	474		437		468		379
Weighted average common shares outstanding — diluted	111,460		111,002		111,426		110,925
Earnings per average common share attributable to common shareholders — basic	$	1.11	$	1.20	$	1.25	$	1.34
Earnings per average common share attributable to common shareholders — diluted	$	1.10	$	1.19	$	1.25	$	1.34