XML 88 R76.htm IDEA: XBRL DOCUMENT
v3.22.1

Commitments and Contingencies - Narrative (Details) | Mar. 31, 2022 counterparty | Oct. 31, 2021 facility | Jun. 30, 2019 facility | Apr. 30, 2019 case | Feb. 28, 2019 case
--- | --- | --- | --- | --- | ---
Loss Contingencies |  |  |  |  |
Number of facilities | facility |  | 2 |  |  |
Sierra Club Et Al V. Midwest Generation LLC |  |  |  |  |
Loss Contingencies |  |  |  |  |
Number of facilities | facility |  |  | 4 |  |
Direct Energy vs. Stanley, Forte, Schafer and Lane |  |  |  |  |
Loss Contingencies |  |  |  |  |
Pending lawsuits | case |  |  |  | 3 |
Direct Energy vs. Burk and Dickson |  |  |  |  |
Loss Contingencies |  |  |  |  |
Pending lawsuits | case |  |  |  |  | 2
Winter Storm Uri claims vs. Company as power generator |  |  |  |  |
Loss Contingencies |  |  |  |  |
Pending lawsuits | counterparty | 161 |  |  |  |
Winter Storm Uri, claims vs. Company as retail electric provider |  |  |  |  |
Loss Contingencies |  |  |  |  |
Pending lawsuits | counterparty | 27 |  |  |  |

X
- Definition Number of Facilities + References No definition available. + Details
Name: | nrg_NumberOfFacilities
Namespace Prefix: | nrg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- 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. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_LitigationCaseAxis=nrg_SierraClubEtAlV.MidwestGenerationLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=nrg_DirectEnergyVsStanleyForteSchaferAndLaneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=nrg_DirectEnergyVsBurkAndDicksonLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=nrg_WinterStormUriClaimsAgainstCompanyAsPowerGeneratorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=nrg_WinterStormUriClaimsAgainstCompanyAsRetailElectricProviderMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |