| Submission | Feb. 12, 2025 |
| Submission [Line Items] | |
| Central Index Key | 0001109357 |
| Registrant Name | EXELON CORP |
| Form Type | S-3 |
| Submission Type | S-3 |
| Fee Exhibit Type | EX-FILING FEES |
| Offerings | Feb. 12, 2025 USD ($) |
| Offering: 1 | |
| Offering: | |
| Rule 457(o) | true |
| Security Type | Debt |
| Security Class Title | Exelon Corporation Debt Securities |
| Fee Rate | 0.01531% |
| Offering: 2 | |
| Offering: | |
| Rule 457(o) | true |
| Security Type | Equity |
| Security Class Title | Exelon Corporation Common Stock |
| Fee Rate | 0.01531% |
| Offering: 3 | |
| Offering: | |
| Rule 457(o) | true |
| Security Type | Equity |
| Security Class Title | Exelon Corporation Stock Purchase Contracts |
| Fee Rate | 0.01531% |
| Offering: 4 | |
| Offering: | |
| Rule 457(o) | true |
| Security Type | Equity |
| Security Class Title | Exelon Corporation Stock Purchase Units |
| Fee Rate | 0.01531% |
| Offering: 5 | |
| Offering: | |
| Rule 457(o) | true |
| Security Type | Equity |
| Security Class Title | Exelon Corporation Preferred Stock |
| Fee Rate | 0.01531% |
| Offering: 6 | |
| Offering: | |
| Rule 457(o) | true |
| Security Type | Equity |
| Security Class Title | Exelon Corporation Depositary Shares |
| Fee Rate | 0.01531% |
| Offering: 7 | |
| Offering: | |
| Rule 457(o) | true |
| Security Type | Debt |
| Security Class Title | Commonwealth Edison Company Debt Securities |
| Fee Rate | 0.01531% |
| Offering: 8 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(o) | true |
| Security Type | Unallocated (Universal) Shelf |
| Maximum Aggregate Offering Price | $ 12,575,000,000 |
| Fee Rate | 0.01531% |
| Amount of Registration Fee | $ 1,925,232.50 |
| Offering Note | There is being registered hereby such indeterminate amount of the identified classes of securities as may from time to time be issued at indeterminate prices. The amount registered, the proposed maximum offering price per unit, the maximum aggregate offering price and the amount of registration fee are not specified as to each class of securities being registered. The proposed maximum offering price per unit will be determined from time to time by the registrants in connection with the issuance of securities registered under the registration statement to which this Exhibit 107 relates. |
| Fees Summary | Feb. 12, 2025 USD ($) |
| Fees Summary [Line Items] | |
| Total Offering | $ 12,575,000,000 |
| Previously Paid Amount | 0 |
| Total Fee Amount | 1,925,232.50 |
| Total Offset Amount | 0 |
| Net Fee | $ 1,925,232.50 |
