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Other Income and Other Expense (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Apr. 30, 2022 | Nov. 06, 2020
Other income: |  |  |  |  |
Interest income | $ 7,326,000 | $ 6,726,000 | $ 12,210,000 |  |
Investment gains (losses) — net | 0 | 0 | 2,358,000 |  |
Miscellaneous | 590,000 | 53,000 | 149,000 |  |
Total other income | 7,916,000 | 45,100,000 | 56,703,000 |  |
Other expense: |  |  |  |  |
Non-operating costs | (18,619,000) | (13,008,000) | (12,400,000) |  |
Investment gains (losses) - net | (20,537,000) | (1,367,000) |  |  |
Miscellaneous | (13,229,000) | (11,021,000) | (45,376,000) |  |
Total other expense | (52,385,000) | (25,396,000) | (57,776,000) |  |
Arizona Public Service Company |  |  |  |  |
Other income: |  |  |  |  |
Interest income | 5,332,000 | 4,692,000 | 9,621,000 |  |
Miscellaneous | 556,000 | 40,000 | 148,000 |  |
Total other income | 5,888,000 | 43,053,000 | 51,755,000 |  |
Other expense: |  |  |  |  |
Non-operating costs | (15,579,000) | (10,080,000) | (10,659,000) |  |
Miscellaneous | (10,529,000) | (8,817,000) | (43,035,000) |  |
Total other expense | (26,108,000) | (18,897,000) | (53,694,000) |  |
ACC | Coal Community Transition Plan |  |  |  |  |
Other expense: |  |  |  |  |
Amount funded by shareholders |  |  | 25,200,000 |  | $ 25,000,000
ACC | Navajo Nation, Electrification Projects | Coal Community Transition Plan |  |  |  |  |
Other expense: |  |  |  |  |
Amount funded by shareholders | 7,000,000 |  | 10,000,000 | $ 500,000 | $ 10,000,000
SCR deferral |  |  |  |  |
Other income: |  |  |  |  |
Debt return |  | 14,955,000 | 15,865,000 |  |
SCR deferral | Arizona Public Service Company |  |  |  |  |
Other income: |  |  |  |  |
Debt return | 0 | 14,955,000 | 15,865,000 |  |
Octotillo modernization project |  |  |  |  |
Other income: |  |  |  |  |
Debt return |  | 23,366,000 | 26,121,000 |  |
Octotillo modernization project | Arizona Public Service Company |  |  |  |  |
Other income: |  |  |  |  |
Debt return | $ 0 | $ 23,366,000 | $ 26,121,000 |  |

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