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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - PSO (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Cash Flow Hedges, Tax | $ 1.3 | $ (33.8) | $ 21.6
PUBLIC SERVICE COMPANY OF OKLAHOMA |  |  |
Cash Flow Hedges, Tax | $ 1.0 | $ (0.4) | $ 0.3

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- Definition Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-12 + Details
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