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Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Tabular reconciliation of the total amounts of unrecognized tax benefits, excluding interest and penalties, at the beginning and end of the year |  |  |
Total unrecognized tax benefits, beginning of the year | $ 43,097 | $ 45,086 | $ 45,655
Additions for tax positions of the current year | 1,473 | 1,399 | 3,305
Additions for tax positions of prior years | 419 | 2,069 | 1,449
Reductions for tax positions of prior years for: |  |  |
Changes in judgment | 661 | (3,495) | (2,659)
Settlements with taxing authorities | 0 | 0 | 0
Lapses of applicable statute of limitations | (1,376) | (1,962) | (2,664)
Total unrecognized tax benefits, end of the year | 44,274 | 43,097 | 45,086
Arizona Public Service Company |  |  |
Tabular reconciliation of the total amounts of unrecognized tax benefits, excluding interest and penalties, at the beginning and end of the year |  |  |
Total unrecognized tax benefits, beginning of the year | 43,097 | 45,086 | 45,655
Additions for tax positions of the current year | 1,473 | 1,399 | 3,305
Additions for tax positions of prior years | 419 | 2,069 | 1,449
Reductions for tax positions of prior years for: |  |  |
Changes in judgment | 661 | (3,495) | (2,659)
Settlements with taxing authorities | 0 | 0 | 0
Lapses of applicable statute of limitations | (1,376) | (1,962) | (2,664)
Total unrecognized tax benefits, end of the year | $ 44,274 | $ 43,097 | $ 45,086

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10B -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-10B + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A + Details
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