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Changes in Accumulated Other Comprehensive Income (Exelon) | 9 Months Ended
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Sep. 30, 2024
Changes in Accumulated Other Comprehensive Income [Abstract] |
Changes in Accumulated Other Comprehensive Income | Changes in Accumulated Other Comprehensive Income (Loss) (Exelon) The following table presents changes in Exelon's AOCI, net of tax, by component:
Three Months Ended September 30, 2024 | Cash Flow Hedges |  | Pension and Non-Pension Postretirement Benefit Plan Items(a) |  |  |  | Total
Balance at June 30, 2024 | $ | 27 |  |  | $ | (739) |  |  |  |  | $ | (712) |
OCI before reclassifications | (28) |  |  | — |  |  |  |  | (28) |
Amounts reclassified from AOCI | (1) |  |  | 5 |  |  |  |  | 4 |
Net current-period OCI | (29) |  |  | 5 |  |  |  |  | (24) |
Balance at September 30, 2024 | $ | (2) |  |  | $ | (734) |  |  |  |  | $ | (736) |
Three Months Ended September 30, 2023 | Cash Flow Hedges |  | Pension and Non-Pension Postretirement Benefit Plan Items(a) |  |  |  | Total
Balance at June 30, 2023 | $ | 17 |  |  | $ | (647) |  |  |  |  | $ | (630) |
OCI before reclassifications | 22 |  |  | (3) |  |  |  |  | 19 |
Amounts reclassified from AOCI | (1) |  |  | 16 |  |  |  |  | 15 |
Net current-period OCI | 21 |  |  | 13 |  |  |  |  | 34 |
Balance at September 30, 2023 | $ | 38 |  |  | $ | (634) |  |  |  |  | $ | (596) |
Nine Months Ended September 30, 2024 | Cash Flow Hedges |  | Pension and Non-Pension Postretirement Benefit Plan Items(a) |  |  |  |  |  | Total
Balance at December 31, 2023 | $ | (3) |  |  | $ | (723) |  |  |  |  |  |  | $ | (726) |
OCI before reclassifications | 4 |  |  | (26) |  |  |  |  |  |  | (22) |
Amounts reclassified from AOCI | (3) |  |  | 15 |  |  |  |  |  |  | 12 |
Net current-period OCI | 1 |  |  | (11) |  |  |  |  |  |  | (10) |
Balance at September 30, 2024 | $ | (2) |  |  | $ | (734) |  |  |  |  |  |  | $ | (736) |
Nine Months Ended September 30, 2023 | Cash Flow Hedges |  | Pension and Non-Pension Postretirement Benefit Plan Items(a) |  |  |  |  |  | Total
Balance at December 31, 2022 | $ | 2 |  |  | $ | (640) |  |  |  |  |  |  | $ | (638) |
OCI before reclassifications | 37 |  |  | (16) |  |  |  |  |  |  | 21 |
Amounts reclassified from AOCI | (1) |  |  | 22 |  |  |  |  |  |  | 21 |
Net current-period OCI | $ | 36 |  |  | $ | 6 |  |  |  |  |  |  | $ | 42 |
Balance at September 30, 2023 | $ | 38 |  |  | $ | (634) |  |  |  |  |  |  | $ | (596) |
__________ (a)This AOCI component is included in the computation of net periodic pension and OPEB cost. See Note 14 — Retirement Benefits of the 2023 Form 10-K and Note 7 — Retirement Benefits for additional information. See Exelon's Statements of Operations and Comprehensive Income for individual components of AOCI. The following table presents Income tax benefit (expense) allocated to each component of Exelon's Other comprehensive income (loss):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Pension and non-pension postretirement benefit plans: |  |  |  |  |  |  |
Actuarial losses reclassified to periodic benefit cost | $ | (2) |  |  | $ | (5) |  |  | $ | (6) |  |  | $ | (7) |
Pension and non-pension postretirement benefit plans valuation adjustments | — |  |  | 1 |  |  | 8 |  |  | 5 |
Unrealized gains on cash flow hedges | 10 |  |  | (7) |  |  | — |  |  | (11) |

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