Long-Term Debt and Liquidity Matters (Tables)

9 Months Ended

Sep. 30, 2024

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, 2024				As of December 31, 2023
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Pinnacle West	$	1,566,552	$	1,607,813	$	1,123,731	$	1,095,935
APS	7,489,766		6,860,027		7,291,891		6,459,718
Total	$	9,056,318	$	8,467,840	$	8,415,622	$	7,555,653