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Changes in Accumulated Other Comprehensive Income (Exelon)
 9 Months Ended
Sep. 30, 2022
Changes in Accumulated Other Comprehensive Income [Abstract]  
Changes in Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income (Exelon)
The following tables present changes in Exelon's AOCI, net of tax, by component:
Three Months Ended September 30, 2022 Cash Flow Hedges
Pension and
Non-Pension
Postretirement
Benefit Plan
Items(a)
Foreign
Currency
Items		Total
Balance as of June 30, 2022$— $(701)$— $(701)
Amounts reclassified from AOCI— 9 — 9 
Net current-period OCI— 9 — 9 
Balance as of September 30, 2022$— $(692)$— $(692)
Three Months Ended September 30, 2021Cash Flow Hedges
Pension and
Non-Pension
Postretirement
Benefit Plan
Items(a)
Foreign
Currency
Items		Total
Balance as of June 30, 2021$(5)$(3,264)$(20)$(3,289)
OCI before reclassifications— 14 (3)11 
Amounts reclassified from AOCI— 55 — 55 
Net current-period OCI— 69 (3)66 
Balance as of September 30, 2021$(5)$(3,195)$(23)$(3,223)

Nine Months Ended September 30, 2022 Cash Flow Hedges
Pension and
Non-Pension
Postretirement
Benefit Plan
Items(a)
Foreign
Currency
Items		Total
Balance as of December 31, 2021$(6)$(2,721)$(23)$(2,750)
Separation of Constellation6 1,994 23 2,023 
OCI before reclassifications— 2 — 2 
Amounts reclassified from AOCI— 33 — 33 
Net current-period OCI— 35 — 35 
Balance as of September 30, 2022$— $(692)$— $(692)
Nine Months Ended September 30, 2021Cash Flow Hedges
Pension and
Non-Pension
Postretirement
Benefit Plan
Items(a)
Foreign
Currency
Items		Total
Balance as of December 31, 2020$(5)$(3,372)$(23)$(3,400)
OCI before reclassifications(1)15 — 14 
Amounts reclassified from AOCI— 163 — 163 
Net current-period OCI(1)178 — 177 
Balance as of September 30, 2021$(6)$(3,194)$(23)$(3,223)
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(a)This AOCI component is included in the computation of net periodic pension and OPEB cost. Additionally, as of February 1, 2022, in connection with the separation, Exelon's pension and OPEB plans were remeasured. See Note 9 — Retirement Benefits for additional information. See Exelon's Statements of Operations and Comprehensive Income for individual components of AOCI.
The following table presents income tax benefit (expense) allocated to each component of Exelon's other comprehensive income (loss):
Three Months Ended September 30,Nine Months Ended September 30,
2022202120222021
Pension and non-pension postretirement benefit plans:
Prior service benefit reclassified to periodic benefit cost$— $1 $— $3 
Actuarial loss reclassified to periodic benefit cost(3)(19)(11)(57)
Pension and non-pension postretirement benefit plans valuation adjustment— (7)— (8)