Fair Value Measurements (Fair Value, Option, Quantitative Disclosures) (Detail)
$ in Millions |
9 Months Ended |
|
|
Sep. 30, 2026
USD ($)
$ / MMBTU
|
Sep. 30, 2026
USD ($)
$ / MWh
|
Sep. 30, 2026
USD ($)
|
Dec. 31, 2025
USD ($)
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
|
$ 1,410
|
|
$ 1,410
|
$ 1,410
|
$ 958
|
| Fair Value of Derivative Liabilities |
|
424
|
|
424
|
424
|
245
|
| Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
|
641
|
|
641
|
641
|
482
|
| Fair Value of Derivative Liabilities |
|
55
|
|
55
|
55
|
31
|
| Fair Value, Measurements, Recurring |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Total assets |
|
9,463
|
|
9,463
|
9,463
|
7,889
|
| Total liabilities |
|
424
|
|
424
|
424
|
245
|
| Fair Value, Measurements, Recurring | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Total assets |
|
4,854
|
|
4,854
|
4,854
|
4,064
|
| Total liabilities |
|
55
|
|
55
|
55
|
31
|
| Fair Value, Measurements, Recurring | Commodity Contract |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
|
861
|
|
861
|
861
|
729
|
| Fair Value of Derivative Liabilities |
|
415
|
|
415
|
415
|
216
|
| Fair Value, Measurements, Recurring | Commodity Contract | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
|
159
|
|
159
|
159
|
257
|
| Fair Value of Derivative Liabilities |
|
46
|
|
46
|
46
|
13
|
| Fair Value, Measurements, Recurring | Level 3 |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Total assets |
|
753
|
|
753
|
753
|
642
|
| Total liabilities |
|
124
|
|
124
|
124
|
15
|
| Fair Value, Measurements, Recurring | Level 3 | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Total assets |
|
88
|
|
88
|
88
|
208
|
| Total liabilities |
|
33
|
|
33
|
33
|
0
|
| Fair Value, Measurements, Recurring | Level 3 | Commodity Contract |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
|
753
|
|
753
|
753
|
642
|
| Fair Value of Derivative Liabilities |
|
124
|
|
124
|
124
|
15
|
| Fair Value, Measurements, Recurring | Level 3 | Commodity Contract | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
|
88
|
|
88
|
88
|
208
|
| Fair Value of Derivative Liabilities |
|
33
|
|
33
|
33
|
$ 0
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
[1],[2] |
64
|
|
64
|
64
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
[1],[2] |
$ 64
|
|
64
|
64
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Minimum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
(2)
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Minimum | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
(2)
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Maximum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
12
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Maximum | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
2
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Weighted Average | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2],[3] |
3
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Natural Gas | Weighted Average | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2],[3] |
(1)
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
[1],[2] |
$ 15
|
|
15
|
15
|
|
| Fair Value of Derivative Liabilities |
[2] |
24
|
|
24
|
24
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
[1],[2] |
15
|
|
15
|
15
|
|
| Fair Value of Derivative Liabilities |
[2] |
24
|
|
$ 24
|
24
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Minimum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2] |
|
|
1
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Minimum | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2] |
|
|
1
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Maximum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2] |
|
|
36
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Maximum | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2] |
|
|
36
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Weighted Average | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2],[3] |
|
|
13
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Weighted Average | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2],[3] |
|
|
13
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Weighted Average | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2],[3] |
|
|
11
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | FTRs | Weighted Average | Liabilities | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2],[3] |
|
|
11
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Electricity | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
[1],[2] |
351
|
|
$ 351
|
351
|
|
| Fair Value of Derivative Liabilities |
[2] |
91
|
|
$ 91
|
91
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Electricity | Minimum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2] |
|
|
37
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Electricity | Maximum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2] |
|
|
136
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Electricity | Weighted Average | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[1],[2],[3] |
|
|
65
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Discounted cash flow | Commodity Contract | Electricity | Weighted Average | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2],[3] |
|
|
76
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
[1],[2] |
323
|
|
$ 323
|
323
|
|
| Fair Value of Derivative Liabilities |
[1],[2] |
9
|
|
9
|
9
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Fair Value of Derivative Assets |
[1],[2] |
9
|
|
9
|
9
|
|
| Fair Value of Derivative Liabilities |
[1],[2] |
$ 9
|
|
$ 9
|
$ 9
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
1
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
3
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Assets | Price Volatility |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
2.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Assets | Price Volatility | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
14.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Assets | Credit Spread |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[5] |
|
|
|
0.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
2
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Liabilities | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price |
[2] |
2
|
[1] |
(19)
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Liabilities | Price Volatility |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
56.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Liabilities | Price Volatility | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
56.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Liabilities | Credit Spread |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[5] |
|
|
|
1.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Liabilities | Credit Spread | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[5] |
|
|
|
1.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
20
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
20
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Assets | Price Volatility |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
80.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Assets | Price Volatility | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
71.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Assets | Credit Spread |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[5] |
|
|
|
2.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
8
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Liabilities | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2] |
8
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Liabilities | Price Volatility |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
79.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Liabilities | Price Volatility | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[4] |
|
|
|
79.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Liabilities | Credit Spread |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[5] |
|
|
|
2.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Liabilities | Credit Spread | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[5] |
|
|
|
2.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Assets | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2],[3] |
4
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Assets | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2],[3] |
8
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Assets | Price Volatility |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[3],[4] |
|
|
|
64.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Assets | Price Volatility | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[3],[4] |
|
|
|
47.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Assets | Credit Spread |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[3],[5] |
|
|
|
1.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2],[3] |
4
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MMBTU |
[1],[2],[3] |
4
|
|
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Price Volatility |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[3],[4] |
|
|
|
64.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Price Volatility | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Price volatility (percentage) |
[1],[3],[4] |
|
|
|
64.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Credit Spread |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[3],[5] |
|
|
|
1.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Credit Spread | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Credit Spread (percentage) |
[1],[3],[5] |
|
|
|
1.00%
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | FTRs | Minimum | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2] |
|
|
(19)
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | FTRs | Maximum | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2] |
|
|
36
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | FTRs | Maximum | Liabilities | Market Price | Virginia Electric and Power Company |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2] |
|
|
36
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Electricity | Minimum | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2] |
|
|
36
|
|
|
| Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Electricity | Maximum | Liabilities | Market Price |
|
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
|
| Market Price | $ / MWh |
[2] |
|
|
169
|
|
|
|
|