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Other Income and Other Expense
 12 Months Ended
Dec. 31, 2025
Other Income and Expenses [Abstract]  
Other Income and Other Expense Other Income and Other Expense
 
The following table provides detail of Pinnacle West’s consolidated other income and other expense for the years ended 2025, 2024, and 2023 (dollars in thousands):
 202520242023
Other income:   
Interest income $18,037 $24,322 (a)$27,242 (a)
Investment gain — net (b)26,720 — — 
Gain on sale of BCE (Note 22)
— 22,988 6,205 
Miscellaneous4,649 1,304 219 
Total other income$49,406 $48,614 $33,666 
Other expense:
Non-operating costs$(21,332)$(27,370)(c)$(15,260)
Investment losses — net— (1,418)(3,402)
Miscellaneous(8,933)(5,348)(6,394)
Total other expense$(30,265)$(34,136)$(25,056)
(a)2023 and 2024 Interest income is primarily related to PSA interest. See Note 8.
(b)Investment gain is primarily related to El Dorado’s equity investment in SAI. See Note 23.
(c)The 2024 Non-operating cost is primarily related to corporate giving.
The following table provides detail of APS’s other income and other expense for the years ended 2025, 2024, and 2023 (dollars in thousands):
 202520242023
Other income:   
Interest income$15,933 $21,088 (a)$26,853 (a)
Miscellaneous281 6 219 
 Total other income$16,214 $21,094 $27,072 
Other expense:
Non-operating costs$(19,650)$(26,588)(b)$(14,070)
Miscellaneous(6,732)(3,110)(4,194)
Total other expense$(26,382)$(29,698)$(18,264)
(a)2023 and 2024 Interest income is primarily related to PSA interest. See Note 8.
(b)The 2024 Non-operating cost is primarily related to corporate giving.