Long-Term Debt and Liquidity Matters (Tables)

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Schedule of estimated fair value of long-term debt, including current maturities

The following table presents the estimated fair value of our long-term debt, including current maturities (dollars in thousands):

	As of September 30, 2020				As of December 31, 2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Pinnacle West	$	496,117	$	507,500	$	449,425	$	450,822
APS	5,820,303		6,886,108		5,183,133		5,743,570
Total	$	6,316,420	$	7,393,608	$	5,632,558	$	6,194,392