Nuclear Decommissioning - Nuclear Decommissioning Asset Retirement Obligation Rollforward (Details) - USD ($) $ in Millions |
6 Months Ended | |
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Jun. 30, 2025 |
Jun. 30, 2024 |
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| Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] | ||
| Accretion expense | $ 318 | $ 336 |
| Nuclear Decommissioning | ||
| Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] | ||
| ARO beginning balance | 12,186 | |
| Accretion expense | 309 | |
| Net decrease due to changes in, and timing of, estimated future cash flows | (76) | |
| Costs incurred related to decommissioning plants | (8) | |
| ARO ending balance | $ 12,411 | |
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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash paid during the period to settle an asset retirement obligation. Amounts paid to settle an asset retirement obligation are generally included in the operating section of the Statement of Cash Flows. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in asset retirement obligations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Details
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