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Regulatory Matters - Schedule of Changes in The Deferred Fuel and Purchased Power Regulatory Asset (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023
Change in regulatory asset |  |
Deferred fuel and purchased power costs — current period | $ 64,220 | $ 191,304
Amounts charged to customers | (204,748) | (218,586)
APS |  |
Change in regulatory asset |  |
Deferred fuel and purchased power costs — current period | 64,220 | 191,304
Amounts charged to customers | (204,748) | (218,586)
Power Supply Adjustor (PSA) | ACC | APS |  |
Change in regulatory asset |  |
Beginning balance | 463,195 | 460,561
Deferred fuel and purchased power costs — current period | 64,220 | 191,304
Amounts charged to customers | (204,748) | (218,586)
Ending balance | $ 322,667 | $ 433,279

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- Definition Deferred Fuel And Purchased Power Regulatory Asset (Liability), Current + References No definition available. + Details
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- Definition The amortization of deferred fuel and purchased power costs. + References No definition available. + Details
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- Definition The increase (decrease) during the reporting period in unrecovered fuel costs for a regulated utility company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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