Fair Value of Financial Assets and Liabilities - Fair Value Measurements of Assets and Liabilities, Recurring and Nonrecurring (Details) - USD ($)
$ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Mark-to-market derivative liabilities |
$ 24
|
$ 29
|
| Mark-to-market derivative liabilities (noncurrent liabilities) |
119
|
103
|
| Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
926
|
544
|
| Assets, Fair Value Disclosure |
1,189
|
830
|
| Deferred Compensation Liability, Current and Noncurrent |
(64)
|
(74)
|
| Total liabilities |
206
|
207
|
| Fair Value, Net Asset (Liability) |
983
|
623
|
| 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 |
(135)
|
(132)
|
| 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 |
(7)
|
(1)
|
| Fair Value, Recurring [Member] | Economic Hedging Instrument Liabilites [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| 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 |
(7)
|
(1)
|
| Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
150
|
219
|
| Fair Value, Recurring [Member] | Restricted cash member [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
175
|
176
|
| Fair Value, Recurring [Member] | Other Assets [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
49
|
41
|
| Fair Value, Recurring [Member] | Rabbi Trust Investments [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
261
|
260
|
| Fair Value, Recurring [Member] | Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
97
|
94
|
| Fair Value, Recurring [Member] | Mutual Funds [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Investments, Fair Value Disclosure |
64
|
65
|
| 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 |
94
|
95
|
| Fair Value, Recurring [Member] | 45838 |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
2
|
26
|
| Fair Value, Recurring [Member] | Economic Hedges |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
0
|
0
|
| Fair Value, Recurring [Member] | Interest Rate Derivative Assets |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
2
|
26
|
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
926
|
544
|
| Assets, Fair Value Disclosure |
1,087
|
703
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
1,087
|
703
|
| 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] | Economic Hedging Instrument Liabilites [Member] |
|
|
| 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 |
161
|
159
|
| 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 |
97
|
94
|
| 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 |
64
|
65
|
| 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] | 45838 |
|
|
| 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] | Economic Hedges |
|
|
| 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 |
79
|
105
|
| Deferred Compensation Liability, Current and Noncurrent |
(64)
|
(74)
|
| Total liabilities |
71
|
75
|
| Fair Value, Net Asset (Liability) |
8
|
30
|
| 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 |
(7)
|
(1)
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Economic Hedging Instrument Liabilites [Member] |
|
|
| 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] | Interest Rate Derivative Liabilities |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total mark-to-market derivative liabilities |
(7)
|
(1)
|
| 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 |
77
|
79
|
| 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 |
71
|
73
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 45838 |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
2
|
26
|
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Economic Hedges |
|
|
| 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] | Interest Rate Derivative Assets |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Total derivative assets |
2
|
26
|
| 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 |
23
|
22
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
135
|
132
|
| Fair Value, Net Asset (Liability) |
(112)
|
(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 |
(135)
|
(132)
|
| 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] | Economic Hedging Instrument Liabilites [Member] |
|
|
| 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 |
23
|
22
|
| 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 |
23
|
22
|
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 45838 |
|
|
| 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] | Economic Hedges |
|
|
| 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 |
24
|
29
|
| Mark-to-market derivative liabilities (noncurrent liabilities) |
111
|
103
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
613
|
390
|
| Assets, Fair Value Disclosure |
613
|
390
|
| Total mark-to-market derivative liabilities |
(135)
|
(132)
|
| Deferred Compensation Liability, Current and Noncurrent |
(8)
|
(8)
|
| Total liabilities |
143
|
140
|
| Fair Value, Net Asset (Liability) |
470
|
250
|
| Mark-to-market derivative liabilities |
24
|
29
|
| Mark-to-market derivative liabilities (noncurrent liabilities) |
111
|
103
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
61
|
66
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] | Restricted cash member [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
173
|
176
|
| Commonwealth Edison Co | Fair Value, Recurring [Member] | Other Assets [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
49
|
41
|
| 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] | 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 |
613
|
390
|
| Assets, Fair Value Disclosure |
613
|
390
|
| 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) |
613
|
390
|
| 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] | 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 |
(8)
|
(8)
|
| Total liabilities |
8
|
8
|
| Fair Value, Net Asset (Liability) |
(8)
|
(8)
|
| 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] | 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 |
(135)
|
(132)
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
135
|
132
|
| Fair Value, Net Asset (Liability) |
(135)
|
(132)
|
| 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] | 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 |
2
|
29
|
| Assets, Fair Value Disclosure |
35
|
63
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
(7)
|
(7)
|
| Total liabilities |
7
|
7
|
| Fair Value, Net Asset (Liability) |
28
|
56
|
| PECO Energy Co | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
23
|
19
|
| 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 |
33
|
34
|
| 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 |
11
|
12
|
| 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 |
22
|
22
|
| 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 |
2
|
29
|
| Assets, Fair Value Disclosure |
13
|
41
|
| 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) |
13
|
41
|
| 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 |
11
|
12
|
| 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 |
11
|
12
|
| 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 |
22
|
22
|
| Total mark-to-market derivative liabilities |
0
|
0
|
| Deferred Compensation Liability, Current and Noncurrent |
(7)
|
(7)
|
| Total liabilities |
7
|
7
|
| Fair Value, Net Asset (Liability) |
15
|
15
|
| 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 |
22
|
22
|
| 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 |
22
|
22
|
| 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] | 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 |
232
|
1
|
| Assets, Fair Value Disclosure |
241
|
11
|
| 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) |
237
|
7
|
| Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
9
|
33
|
| 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 |
9
|
10
|
| 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 |
9
|
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 |
232
|
1
|
| Assets, Fair Value Disclosure |
241
|
11
|
| 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) |
241
|
11
|
| 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 |
9
|
10
|
| 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 |
9
|
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] | 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] | 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 |
47
|
93
|
| Assets, Fair Value Disclosure |
200
|
244
|
| Deferred Compensation Liability, Current and Noncurrent |
(10)
|
(12)
|
| Total liabilities |
10
|
12
|
| Fair Value, Net Asset (Liability) |
190
|
232
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
48
|
70
|
| Pepco Holdings LLC | Fair Value, Recurring [Member] | Restricted cash member [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
2
|
0
|
| 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 |
153
|
151
|
| 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 |
95
|
92
|
| 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 |
9
|
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
|
44
|
| 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 |
47
|
93
|
| Assets, Fair Value Disclosure |
151
|
194
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
151
|
194
|
| 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 |
104
|
101
|
| 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 |
95
|
92
|
| 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 |
9
|
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 |
27
|
29
|
| Deferred Compensation Liability, Current and Noncurrent |
(10)
|
(12)
|
| Total liabilities |
10
|
12
|
| Fair Value, Net Asset (Liability) |
17
|
17
|
| 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 |
27
|
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 |
21
|
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 |
22
|
21
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
22
|
21
|
| 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 |
22
|
21
|
| 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 |
22
|
21
|
| 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 |
23
|
21
|
| Assets, Fair Value Disclosure |
160
|
156
|
| Deferred Compensation Liability, Current and Noncurrent |
(1)
|
(1)
|
| Total liabilities |
1
|
1
|
| Fair Value, Net Asset (Liability) |
159
|
155
|
| Potomac Electric Power Company | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
21
|
30
|
| 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 |
137
|
135
|
| 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 |
94
|
91
|
| 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 |
43
|
44
|
| 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 |
23
|
21
|
| Assets, Fair Value Disclosure |
117
|
112
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
117
|
112
|
| 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 |
94
|
91
|
| 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 |
94
|
91
|
| 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 |
21
|
23
|
| Deferred Compensation Liability, Current and Noncurrent |
(1)
|
(1)
|
| Total liabilities |
1
|
1
|
| Fair Value, Net Asset (Liability) |
20
|
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 |
21
|
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 |
21
|
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 |
22
|
21
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
22
|
21
|
| 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 |
22
|
21
|
| 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 |
22
|
21
|
| 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 |
6
|
3
|
| Assets, Fair Value Disclosure |
6
|
3
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
6
|
3
|
| Delmarva Power and Light Company | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
8
|
20
|
| 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 |
6
|
3
|
| Assets, Fair Value Disclosure |
6
|
3
|
| Deferred Compensation Liability, Current and Noncurrent |
0
|
0
|
| Total liabilities |
0
|
0
|
| Fair Value, Net Asset (Liability) |
6
|
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] | Cash and Cash Equivalents [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
15
|
14
|
| Atlantic City Electric Company | Fair Value, Recurring [Member] | Restricted cash member [Member] |
|
|
| Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
|
|
| Cash equivalents |
2
|
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
|