v3.23.1
Supplemental Financial Information - Balance Sheet (Details) - USD ($)
$ in Millions |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
$ 522
|
$ 407
|
$ 2,476
|
$ 672
|
| Restricted cash |
381
|
566
|
430
|
321
|
| Restricted cash included in other long-term assets |
180
|
117
|
92
|
44
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
582
|
| Total cash, restricted cash, and cash equivalents |
1,083
|
1,090
|
2,998
|
1,619
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
359
|
613
|
|
|
| Taxes accrued |
214
|
211
|
|
|
| Interest accrued |
373
|
338
|
|
|
| Commonwealth Edison Co [Member] |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
75
|
67
|
343
|
131
|
| Restricted cash |
323
|
327
|
246
|
210
|
| Restricted cash included in other long-term assets |
180
|
117
|
92
|
43
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
0
|
| Total cash, restricted cash, and cash equivalents |
578
|
511
|
681
|
384
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
107
|
179
|
|
|
| Taxes accrued |
102
|
92
|
|
|
| Interest accrued |
78
|
124
|
|
|
| PECO Energy Co [Member] |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
27
|
59
|
26
|
36
|
| Restricted cash |
9
|
9
|
8
|
8
|
| Restricted cash included in other long-term assets |
0
|
0
|
0
|
0
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
0
|
| Total cash, restricted cash, and cash equivalents |
36
|
68
|
34
|
44
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
43
|
81
|
|
|
| Taxes accrued |
3
|
10
|
|
|
| Interest accrued |
44
|
47
|
|
|
| Baltimore Gas and Electric Company [Member] |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
20
|
43
|
41
|
51
|
| Restricted cash |
1
|
24
|
34
|
4
|
| Restricted cash included in other long-term assets |
0
|
0
|
0
|
0
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
0
|
| Total cash, restricted cash, and cash equivalents |
21
|
67
|
75
|
55
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
42
|
79
|
|
|
| Taxes accrued |
83
|
34
|
|
|
| Interest accrued |
45
|
42
|
|
|
| Pepco Holdings LLC [Member] |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
367
|
198
|
796
|
136
|
| Restricted cash |
29
|
175
|
106
|
77
|
| Restricted cash included in other long-term assets |
0
|
0
|
0
|
0
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
0
|
| Total cash, restricted cash, and cash equivalents |
396
|
373
|
902
|
213
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
59
|
104
|
|
|
| Taxes accrued |
94
|
70
|
|
|
| Interest accrued |
75
|
61
|
|
|
| Potomac Electric Power Company [Member] |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
126
|
45
|
502
|
34
|
| Restricted cash |
27
|
54
|
34
|
34
|
| Restricted cash included in other long-term assets |
0
|
0
|
0
|
0
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
0
|
| Total cash, restricted cash, and cash equivalents |
153
|
99
|
536
|
68
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
18
|
29
|
|
|
| Taxes accrued |
67
|
52
|
|
|
| Interest accrued |
35
|
32
|
|
|
| Delmarva Power and Light Company [Member] |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
142
|
31
|
120
|
28
|
| Restricted cash |
1
|
121
|
73
|
43
|
| Restricted cash included in other long-term assets |
0
|
0
|
0
|
0
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
0
|
| Total cash, restricted cash, and cash equivalents |
143
|
152
|
193
|
71
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
11
|
20
|
|
|
| Taxes accrued |
14
|
8
|
|
|
| Interest accrued |
22
|
9
|
|
|
| Atlantic City Electric Company [Member] |
|
|
|
|
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |
|
|
|
|
| Cash and cash equivalents |
71
|
72
|
168
|
29
|
| Restricted cash |
0
|
0
|
0
|
0
|
| Restricted cash included in other long-term assets |
0
|
0
|
0
|
0
|
| Cash, restricted cash, and cash equivalents - Held for Sale |
|
|
|
0
|
| Total cash, restricted cash, and cash equivalents |
71
|
72
|
$ 168
|
$ 29
|
| Accrued Expenses [Abstract] |
|
|
|
|
| Compensation-related accruals |
10
|
16
|
|
|
| Taxes accrued |
16
|
12
|
|
|
| Interest accrued |
$ 16
|
$ 14
|
|
|
| X |
- DefinitionCarrying value as of the balance sheet date of obligations incurred and payable for payroll, employee benefits, incentive compensation and vacation. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
| Name: |
exc_AccruedCompensationCurrent |
| Namespace Prefix: |
exc_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
instant |
|
| X |
- References
+ Details
| Name: |
us-gaap_AccruedLiabilitiesCurrentAndNoncurrentAbstract |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:stringItemType |
| Balance Type: |
na |
| Period Type: |
duration |
|
| X |
- DefinitionAmount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
| Name: |
us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
instant |
|
| X |
- DefinitionAmount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
| Name: |
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
instant |
|
| X |
- References
+ Details
| Name: |
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:stringItemType |
| Balance Type: |
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| Period Type: |
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|
| X |
- DefinitionAmount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; attributable to disposal group, including, but not limited to, discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
| Name: |
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
instant |
|
| X |
- DefinitionCarrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
| Name: |
us-gaap_InterestPayableCurrent |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
instant |
|
| X |
- DefinitionAmount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
| Name: |
us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
instant |
|
| X |
- DefinitionAmount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
| Name: |
us-gaap_RestrictedCashAndCashEquivalentsNoncurrent |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
debit |
| Period Type: |
instant |
|
| X |
- DefinitionCarrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
| Name: |
us-gaap_TaxesPayableCurrent |
| Namespace Prefix: |
us-gaap_ |
| Data Type: |
xbrli:monetaryItemType |
| Balance Type: |
credit |
| Period Type: |
instant |
|
| X |
- Details
| Name: |
dei_LegalEntityAxis=exc_CommonwealthEdisonCoMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
dei_LegalEntityAxis=exc_PecoEnergyCoMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
dei_LegalEntityAxis=exc_BaltimoreGasAndElectricCompanyMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
dei_LegalEntityAxis=exc_PepcoHoldingsLLCMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
dei_LegalEntityAxis=exc_PotomacElectricPowerCompanyMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
dei_LegalEntityAxis=exc_DelmarvaPowerandLightCompanyMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
| X |
- Details
| Name: |
dei_LegalEntityAxis=exc_AtlanticCityElectricCompanyMember |
| Namespace Prefix: |
|
| Data Type: |
na |
| Balance Type: |
|
| Period Type: |
|
|
|
