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Asset Retirement Obligations - Narrative (Details) - APS $ in Millions | 6 Months Ended
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Jun. 30, 2023 USD ($)
Cholla |
Asset Retirement Obligations |
Asset retirement obligation, period increase | $ 36
Four Corners Coal-Fired Power Plant |
Asset Retirement Obligations |
Asset retirement obligation, period increase | $ 13

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- Definition Amount of increase (decrease) in asset retirement obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
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