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Schedule I - Condensed Financial Information of Registrant - Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
CONDENSED FINANCIAL STATEMENTS |  |  |
Operating expenses | $ 3,592,474 | $ 2,998,525 | $ 2,798,830
Other |  |  |
Total | 99,281 | 173,982 | 89,044
Interest expense | 283,569 | 254,314 | 247,501
Income tax benefit | 74,827 | 110,086 | 78,173
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | 483,602 | 618,720 | 550,559
Other comprehensive income (loss) — attributable to common shareholders | 23,426 | 7,935 | (5,700)
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | 507,028 | 626,655 | 544,859
Pinnacle West |  |  |
CONDENSED FINANCIAL STATEMENTS |  |  |
Operating expenses | 8,850 | 10,245 | 7,901
Other |  |  |
Equity in earnings of subsidiaries | 500,042 | 628,916 | 566,147
Other expense | (4,725) | (4,919) | (4,586)
Total | 495,317 | 623,997 | 561,561
Interest expense | 18,861 | 10,672 | 14,021
Income before income taxes | 467,606 | 603,080 | 539,639
Income tax benefit | (15,996) | (15,640) | (10,920)
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | 483,602 | 618,720 | 550,559
Other comprehensive income (loss) — attributable to common shareholders | 23,426 | 7,935 | (5,700)
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | $ 507,028 | $ 626,655 | $ 544,859

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