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Other Income and Other Expense | 12 Months Ended
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Dec. 31, 2023
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 2023, 2022 and 2021 (dollars in thousands):
| 2023 |  | 2022 |  | 2021
Other income: |  |  |  |  |
Interest income | $ | 27,242 |  | (a) | $ | 7,326 |  |  | $ | 6,726 |
Gain on Sale of BCE (Note 20) | 6,205 |  |  | — |  |  | — |
Debt return on Four Corners SCR deferral (Note 3) | — |  |  | — |  |  | 14,955 |
Debt return on Ocotillo modernization project (Note 3) | — |  |  | — |  |  | 23,366 |
Miscellaneous | 219 |  |  | 590 |  |  | 53 |
Total other income | $ | 33,666 |  |  | $ | 7,916 |  |  | $ | 45,100 |
Other expense: |  |  |  |  |
Non-operating costs | $ | (15,260) |  |  | $ | (18,619) |  |  | $ | (13,008) |
Investment gains (losses) — net | (3,402) |  |  | (20,537) |  | (b) | (1,367) |
Miscellaneous | (6,394) |  |  | (13,229) |  | (c) | (11,021) |
Total other expense | $ | (25,056) |  |  | $ | (52,385) |  |  | $ | (25,396) |
(a)The 2023 interest income is primarily related to PSA Interest. See Note 3. (b)The 2022 investment loss is primarily related to an impairment of PNW Power’s Clear Creek wind farm investment. See Note 10. (c)The 2022 miscellaneous amount includes donations of $7 million to the APS Foundation. Other Income and Other Expense - APS The following table provides detail of APS’s other income and other expense for 2023, 2022 and 2021 (dollars in thousands):
| 2023 |  | 2022 |  | 2021
Other income: |  |  |  |  |
Interest income | $ | 26,853 |  | (a) | $ | 5,332 |  |  | $ | 4,692 |
Debt return on Four Corners SCR deferral (Note 3) | — |  |  | — |  |  | 14,955 |
Debt return on Ocotillo modernization project (Note 3) | — |  |  | — |  |  | 23,366 |
Miscellaneous | 219 |  |  | 556 |  |  | 40 |
Total other income | $ | 27,072 |  |  | $ | 5,888 |  |  | $ | 43,053 |
Other expense: |  |  |  |  |
Non-operating costs | $ | (14,070) |  |  | $ | (15,579) |  |  | $ | (10,080) |
Miscellaneous | (4,194) |  |  | (10,529) |  | (b) | (8,817) |
Total other expense | $ | (18,264) |  |  | $ | (26,108) |  |  | $ | (18,897) |
(a)The 2023 interest income is primarily related to PSA Interest. See Note 3. (b)The 2022 miscellaneous amount includes donations of $7 million to the APS Foundation.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 610 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//610/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 720 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//720/tableOfContent + Details
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