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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 7,380 | $ 7,515
Mark-to-market for economic hedging activities | 472 | (1,944)
Revenue | 7,429 | 7,722
Less: Revenues accounted for under topics other than ASC 606 and ASC 815 | 16 | 8
Derivative revenue | 468 | (1,932)
Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | (3) | (1)
Revenue | (6) | (10)
Less: Revenues accounted for under topics other than ASC 606 and ASC 815 | 0 | 0
Retail revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 7,229 | 7,363
Derivative revenue | 10 | 27
Retail revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Derivative revenue | 0 | 0
Energy revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 152 | 128
Derivative revenue | 62 | 66
Energy revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | (3) | 2
Derivative revenue | (3) | 2
Capacity revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 42 | 42
Derivative revenue | 22 | 6
Capacity revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | (1) | 0
Derivative revenue | 0 | 0
Derivative revenue |  |
Disaggregation of Revenue [Line Items] |  |
Mark-to-market for economic hedging activities | (60) | 91
Less: Realized and unrealized ASC 815 revenue | 33 | 199
Derivative revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Mark-to-market for economic hedging activities | 0 | (11)
Less: Realized and unrealized ASC 815 revenue | (3) | (9)
Other revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 76 | 109
Contract amortization | (10) | (11)
Other revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | (2) | (1)
Contract amortization | 0 | 0
Total operating revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 7,429 | 7,722
Total operating revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (6) | (10)
Other revenue, derivative |  |
Disaggregation of Revenue [Line Items] |  |
Derivative revenue | (1) | 9
Other revenue, derivative | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Derivative revenue | 0 | 0
Home | Retail revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 3,129 | 2,660
Home | Retail revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Business | Retail revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 4,100 | 4,703
Business | Retail revenue | Corporate/Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Texas | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2,231 | 2,036
Revenue | 2,233 | 2,034
Less: Revenues accounted for under topics other than ASC 606 and ASC 815 | 0 | 0
Texas | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2,178 | 1,958
Derivative revenue | 0 | 0
Texas | Energy revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 7 | 4
Derivative revenue | 0 | 0
Texas | Capacity revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Derivative revenue | 0 | 0
Texas | Derivative revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Mark-to-market for economic hedging activities | 0 | 0
Less: Realized and unrealized ASC 815 revenue | 2 | (2)
Texas | Other revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 48 | 72
Contract amortization | 0 | 0
Texas | Total operating revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 2,233 | 2,034
Texas | Other revenue, derivative | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Derivative revenue | 2 | (2)
Texas | Home | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,360 | 1,236
Texas | Business | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 818 | 722
East | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 3,481 | 4,064
Revenue | 3,515 | 4,176
Less: Revenues accounted for under topics other than ASC 606 and ASC 815 | 10 | (1)
East | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 3,428 | 4,016
Derivative revenue | 10 | 27
East | Energy revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 81 | 74
Derivative revenue | 43 | 47
East | Capacity revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 41 | 41
Derivative revenue | 22 | 6
East | Derivative revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Mark-to-market for economic hedging activities | (51) | 35
Less: Realized and unrealized ASC 815 revenue | 24 | 113
East | Other revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 26 | 21
Contract amortization | (10) | (11)
East | Total operating revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 3,515 | 4,176
East | Other revenue, derivative | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Derivative revenue | 0 | (2)
East | Home | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 702 | 651
East | Business | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2,726 | 3,365
West/Services/Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,203 | 1,268
Revenue | 1,219 | 1,374
Less: Revenues accounted for under topics other than ASC 606 and ASC 815 | 6 | 9
West/Services/Other | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,155 | 1,241
Derivative revenue | 0 | 0
West/Services/Other | Energy revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 67 | 48
Derivative revenue | 22 | 17
West/Services/Other | Capacity revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2 | 1
Derivative revenue | 0 | 0
West/Services/Other | Derivative revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Mark-to-market for economic hedging activities | (9) | 67
Less: Realized and unrealized ASC 815 revenue | 10 | 97
West/Services/Other | Other revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 4 | 17
Contract amortization | 0 | 0
West/Services/Other | Total operating revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,219 | 1,374
West/Services/Other | Other revenue, derivative | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Derivative revenue | (3) | 13
West/Services/Other | Home | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 599 | 625
West/Services/Other | Business | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 556 | 616
Vivint Smart Home | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 468 | 148
Revenue | 468 | 148
Less: Revenues accounted for under topics other than ASC 606 and ASC 815 | 0 | 0
Vivint Smart Home | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 468 | 148
Derivative revenue | 0 | 0
Vivint Smart Home | Energy revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Derivative revenue | 0 | 0
Vivint Smart Home | Capacity revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Derivative revenue | 0 | 0
Vivint Smart Home | Derivative revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Mark-to-market for economic hedging activities | 0 | 0
Less: Realized and unrealized ASC 815 revenue | 0 | 0
Vivint Smart Home | Other revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Contract amortization | 0 | 0
Vivint Smart Home | Total operating revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 468 | 148
Vivint Smart Home | Other revenue, derivative | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Derivative revenue | 0 | 0
Vivint Smart Home | Home | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 468 | 148
Vivint Smart Home | Business | Retail revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 0 | $ 0

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