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Guarantees (Tables) | 12 Months Ended
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Dec. 31, 2024
Guarantees [Abstract] |
Summary of maximum potential exposure that can be estimated by NRG's guarantees, indemnity, and other contingent liability | The following table summarizes the maximum potential exposures that can be estimated for NRG's guarantees, indemnities, and other contingent liabilities by maturity:
| By Remaining Maturity at December 31,
(In millions) | 2024 |  |
Guarantees | Under 1 Year |  | 1-3 Years |  | 3-5 Years |  | Over 5 Years |  | Total |  | 2023 Total
Letters of credit and surety bonds | $ | 3,996 |  |  | $ | 181 |  |  | $ | 11 |  |  | $ | — |  |  | $ | 4,188 |  |  | $ | 4,592 |
Asset sales guarantee obligations | 11 |  |  | 20 |  |  | 18 |  |  | 53 |  |  | 102 |  |  | 126 |
Other guarantees | — |  |  | — |  |  | — |  |  | 27 |  |  | 27 |  |  | 27 |
Total guarantees | $ | 4,007 |  |  | $ | 201 |  |  | $ | 29 |  |  | $ | 80 |  |  | $ | 4,317 |  |  | $ | 4,745 |

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- Definition Tabular disclosure of each guarantee obligation, or each group of similar guarantee obligations, including (a) the nature of the guarantee, including its term, how it arose, and the events or circumstances that would require the guarantor to perform under the guarantee; (b) the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee; (c) the current carrying amount of the liability, if any, for the guarantor's obligations under the guarantee; and (d) the nature of any recourse provisions under the guarantee, and any assets held either as collateral or by third parties, and any relevant related party disclosure. Excludes disclosures about product warranties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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