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Trust Investments - Schedule of Amount Available-For-Sale Debt Securities By Maturity Periods (Details) $ in Millions | Jun. 30, 2025 USD ($)
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Nuclear Decommissioning Trust (NDT) Fund [Member] |
Schedule of Trust Investments [Line Items] |
Total Available-for-Sale Debt Securities | $ 1,324
Rabbi Trust [Member] |
Schedule of Trust Investments [Line Items] |
Total Available-for-Sale Debt Securities | 147
Debt Securities [Member] | Nuclear Decommissioning Trust (NDT) Fund [Member] |
Schedule of Trust Investments [Line Items] |
Less than one year | 22
1 - 5 years | 354
6 - 10 years | 235
11 - 15 years | 69
16 - 20 years | 113
Over 20 years | 531
Debt Securities [Member] | Rabbi Trust [Member] |
Schedule of Trust Investments [Line Items] |
Less than one year | 5
1 - 5 years | 30
6 - 10 years | 16
11 - 15 years | 11
16 - 20 years | 17
Over 20 years | $ 68

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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477268/942-320-50-3A + Details
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