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Segment Reporting
 6 Months Ended
Jun. 30, 2022
Segment Reporting [Abstract]  
Segment Reporting Segment Reporting
The Company’s segment structure reflects how management currently makes financial decisions and allocates resources. The Company manages its operations based on the combined results of the retail and wholesale generation businesses with a geographical focus.
NRG’s chief operating decision maker, its chief executive officer, evaluates the performance of its segments based on operational measures including adjusted earnings before interest, taxes, depreciation and amortization, or Adjusted EBITDA, free cash flow and allocation of capital, as well as net income/(loss).
Three months ended June 30, 2022
(In millions)TexasEastWest/Services/OtherCorporateEliminationsTotal
Revenue
$2,696 $3,516 $1,070 $— $— $7,282 
Depreciation and amortization
77 50 22 8 — 157 
Impairment losses
— 155 — — — 155 
(Loss)/gain on sale of assets
(12)— 44 — — 32 
Equity in earnings of unconsolidated affiliates
— — 4 — — 4 
Income/(loss) before income taxes
766 (11)29 (119)— 665 
Net income/(loss) $766 $(10)$18 $(261)$— $513 
Three months ended June 30, 2021
(In millions)TexasEastWest/Services/OtherCorporateEliminationsTotal
Revenue
$2,025 $2,430 $786 $— $2 $5,243 
Depreciation and amortization
84 (56)18 7 — 53 
Impairment losses
— 306 — — — 306 
Equity in earnings of unconsolidated affiliates
— — 14 — — 14 
Income/(loss) before income taxes783 783 51 (159)— 1,458 
Net income/(loss)$783 $783 $38 $(526)$— $1,078 

Six months ended June 30, 2022
(In millions)TexasEastWest/Services/OtherCorporateEliminationsTotal
Revenue$4,719 $8,234 $2,208 $— $17 $15,178 
Depreciation and amortization153 128 43 16 — 340 
Impairment losses— 155 — — — 155 
(Loss)/gain on sale of assets
(12)— 43 (2)— 29 
Equity in losses of unconsolidated affiliates(1)— (10)— — (11)
Income/(loss) before income taxes1,539 1,530 153 (250)— 2,972 
Net income/(loss) $1,539 $1,531 $143 $(964)$— $2,249 
Six months ended June 30, 2021
(In millions)TexasEastWest/Services/OtherCorporateEliminationsTotal
Revenue$5,727 $5,925 $1,681 $— $1 $13,334 
Depreciation and amortization161 150 45 14 — 370 
Impairment losses— 306 — — — 306 
Gain on sale of assets— — 17 — — 17 
Equity in (losses)/earnings of unconsolidated affiliates(1)— 9 — — 8 
Income/(loss) before income taxes350 1,139 130 (328)— 1,291 
Net income/(loss)$350 $1,139 $112 $(605)$— $996