Cover Cover
Cover Cover | Nov. 04, 2021 | Aug. 05, 2021 | May 07, 2020 |
Cover [Abstract] | |||
Document Type | 8-K | ||
Entity Registrant Name | NRG ENERGY, INC. | ||
Document Period End Date | Nov. 1, 2021 | ||
Entity Central Index Key | 0001013871 | ||
Amendment Flag | false | ||
Entity Incorporation, State or Country Code | DE | ||
Entity File Number | 001-15891 | ||
Entity Tax Identification Number | 41-1724239 | ||
Entity Address, Address Line One | 910 Louisiana Street | ||
Entity Address, City or Town | Houston | ||
Entity Address, State or Province | TX | ||
Entity Address, Postal Zip Code | 77002 | ||
City Area Code | 713 | ||
Local Phone Number | 537-3000 | ||
Written Communications | false | ||
Soliciting Material | false | ||
Pre-commencement Tender Offer | false | ||
Pre-commencement Issuer Tender Offer | false | ||
Title of 12(b) Security | Common Stock, par value $0.01 | ||
Trading Symbol | NRG | ||
Security Exchange Name | NYSE | ||
Entity Emerging Growth Company | false |