Fair Value of Financial Assets and Liabilities - Fair Value Measurements of Assets and Liabilities, Recurring and Nonrecurring (Details) - USD ($)
$ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Mark-to-market derivative liabilities |
$ 21
|
$ 30
|
| Mark-to-market derivative liabilities (noncurrent liabilities) |
96
|
106
|
| Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
1,718
|
825
|
| Assets, Fair Value Disclosure |
2,028
|
1,106
|
| Deferred Compensation Liability, Current and Noncurrent |
(67)
|
(71)
|
| Total liabilities |
184
|
206
|
| Fair Value, Net Asset (Liability) |
1,844
|
900
|
| Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
(117)
|
(131)
|
| Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
(4)
|
| Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
(4)
|
| Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
293
|
278
|
| Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
110
|
101
|
| Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
78
|
71
|
| Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
6
|
6
|
| Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
99
|
100
|
| Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
17
|
3
|
| Fair Value, Recurring [Member] | Interest Rate Derivative Assets |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
17
|
3
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
1,718
|
825
|
| Assets, Fair Value Disclosure |
1,906
|
997
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
1,906
|
997
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
188
|
172
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
110
|
101
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
78
|
71
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Assets |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
0
|
0
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
103
|
88
|
| Deferred Compensation Liability, Current and Noncurrent |
(67)
|
(71)
|
| Total liabilities |
67
|
75
|
| Fair Value, Net Asset (Liability) |
36
|
13
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
(4)
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
(4)
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
86
|
85
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
6
|
6
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
80
|
79
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
17
|
3
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Assets |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
17
|
3
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
19
|
21
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
117
|
131
|
| Fair Value, Net Asset (Liability) |
(98)
|
(110)
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
(117)
|
(131)
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
19
|
21
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
19
|
21
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Assets |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
0
|
0
|
| Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
0
|
0
|
| Commonwealth Edison Co |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Mark-to-market derivative liabilities |
21
|
25
|
| Mark-to-market derivative liabilities (noncurrent liabilities) |
96
|
106
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
573
|
393
|
| Total derivative assets |
0
|
|
| Assets, Fair Value Disclosure |
573
|
393
|
| Total mark-to-market derivative liabilities |
(117)
|
(131)
|
| Deferred Compensation Liability, Current and Noncurrent |
(10)
|
(9)
|
| Total liabilities |
127
|
140
|
| Fair Value, Net Asset (Liability) |
446
|
253
|
| Mark-to-market derivative liabilities |
21
|
25
|
| Mark-to-market derivative liabilities (noncurrent liabilities) |
96
|
106
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
573
|
393
|
| Assets, Fair Value Disclosure |
573
|
393
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
573
|
393
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
(10)
|
(9)
|
| Total liabilities |
10
|
9
|
| Fair Value, Net Asset (Liability) |
(10)
|
(9)
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total mark-to-market derivative liabilities |
(117)
|
(131)
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
117
|
131
|
| Fair Value, Net Asset (Liability) |
(117)
|
(131)
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Commonwealth Edison Co | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
0
|
0
|
| PECO Energy Co | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
81
|
93
|
| Assets, Fair Value Disclosure |
122
|
131
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
(7)
|
(8)
|
| Total liabilities |
7
|
8
|
| Fair Value, Net Asset (Liability) |
115
|
123
|
| PECO Energy Co | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
41
|
38
|
| PECO Energy Co | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
3
|
|
| PECO Energy Co | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
14
|
13
|
| PECO Energy Co | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
24
|
25
|
| PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
81
|
93
|
| Assets, Fair Value Disclosure |
98
|
106
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
98
|
106
|
| PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
17
|
13
|
| PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
3
|
|
| PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
14
|
13
|
| PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
24
|
25
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
(7)
|
(8)
|
| Total liabilities |
7
|
8
|
| Fair Value, Net Asset (Liability) |
17
|
17
|
| PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
24
|
25
|
| PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
24
|
25
|
| PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| PECO Energy Co | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
834
|
205
|
| Assets, Fair Value Disclosure |
850
|
215
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
(4)
|
(4)
|
| Total liabilities |
4
|
4
|
| Fair Value, Net Asset (Liability) |
846
|
211
|
| Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
16
|
10
|
| Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
16
|
10
|
| Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
834
|
205
|
| Assets, Fair Value Disclosure |
850
|
215
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
850
|
215
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
16
|
10
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
16
|
10
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
(4)
|
(4)
|
| Total liabilities |
4
|
4
|
| Fair Value, Net Asset (Liability) |
(4)
|
(4)
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Baltimore Gas and Electric Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
205
|
83
|
| Assets, Fair Value Disclosure |
365
|
240
|
| Deferred Compensation Liability, Current and Noncurrent |
(8)
|
(9)
|
| Total liabilities |
8
|
9
|
| Fair Value, Net Asset (Liability) |
357
|
231
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
160
|
157
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
103
|
99
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
8
|
9
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
6
|
6
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
43
|
43
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
205
|
83
|
| Assets, Fair Value Disclosure |
316
|
191
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
316
|
191
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
111
|
108
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
103
|
99
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
8
|
9
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
29
|
29
|
| Deferred Compensation Liability, Current and Noncurrent |
(8)
|
(9)
|
| Total liabilities |
8
|
9
|
| Fair Value, Net Asset (Liability) |
21
|
20
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
29
|
29
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
6
|
6
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
23
|
23
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
20
|
20
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
20
|
20
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
20
|
20
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
20
|
20
|
| Pepco Holdings LLC | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
0
|
0
|
| Potomac Electric Power Company | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
102
|
33
|
| Assets, Fair Value Disclosure |
247
|
174
|
| Deferred Compensation Liability, Current and Noncurrent |
(1)
|
(1)
|
| Total liabilities |
1
|
1
|
| Fair Value, Net Asset (Liability) |
246
|
173
|
| Potomac Electric Power Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
145
|
141
|
| Potomac Electric Power Company | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
103
|
98
|
| Potomac Electric Power Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
42
|
43
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
102
|
33
|
| Assets, Fair Value Disclosure |
205
|
131
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
205
|
131
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
103
|
98
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
103
|
98
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
23
|
23
|
| Deferred Compensation Liability, Current and Noncurrent |
(1)
|
(1)
|
| Total liabilities |
1
|
1
|
| Fair Value, Net Asset (Liability) |
22
|
22
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
23
|
23
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
23
|
23
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
19
|
20
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
19
|
20
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
19
|
20
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
19
|
20
|
| Potomac Electric Power Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
74
|
3
|
| Assets, Fair Value Disclosure |
74
|
3
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
74
|
3
|
| Delmarva Power and Light Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
74
|
3
|
| Assets, Fair Value Disclosure |
74
|
3
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
74
|
3
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Delmarva Power and Light Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
0
|
0
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
0
|
0
|
| Atlantic City Electric Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Assets, Fair Value Disclosure |
0
|
0
|
| Total liabilities |
$ 0
|
$ 0
|