Mergers, Acquisitions, and Dispositions - Consideration Transferred (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Jan. 07, 2026 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Jan. 06, 2026 |
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| Business Combination [Line Items] | ||||
| Cash consideration | $ 2,537 | $ 0 | ||
| Calpine | ||||
| Business Combination [Line Items] | ||||
| Estimated fair value of CEG Parent common stock issued | $ 17,603 | |||
| Cash consideration | 4,342 | |||
| Estimated fair value of common stock subject to vesting period attributable to post-combination expense | (96) | |||
| Effective settlement of preexisting relationships | (14) | |||
| Total merger consideration | $ 21,835 | |||
| Newly issued shares (in shares) | 50 | |||
| Payments to acquire businesses | $ 4,500 | |||
| Vesting period | 26 months | |||
| Calpine | Common Stock | ||||
| Business Combination [Line Items] | ||||
| Stock price (in dollars per share) | $ 354.58 | |||
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- Definition Business Combination, Consideration Transferred, Equity Interest, Estimated Fair Value Subject to Vesting No definition available.
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- Definition Business Combination, Consideration Transferred, Equity Interest, Estimated Fair Value Subject to Vesting, Period No definition available.
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- Definition Business Combination, Consideration Transferred, Settlement of Preexisting Relationships No definition available.
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- Definition Number of shares of equity interest issued or issuable by acquirer as part of consideration transferred in business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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