XML 173 R54.htm IDEA: XBRL DOCUMENT v3.20.4
Changes in Accumulated Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Schedule Of Changes In Accumulated Other Comprehensive Income (Loss)
The following tables present changes in Exelon's AOCI, net of tax, by component:
Gains and
(Losses) on
Cash Flow
Hedges		Unrealized
Gains and (Losses) on
Marketable
Securities
Pension and
Non-Pension
Postretirement
Benefit Plan
Items (a)
Foreign
Currency
Items
AOCI of Investments
Unconsolidated
Affiliates (b)
Total
Balance at December 31, 2017$(14)$10 $(2,998)

$(23)$(1)$(3,026)
OCI before reclassifications11 — (143)(10)1 (141)
Amounts reclassified from AOCI1 — 181 — — 182 
Net current-period OCI12 — 38 (10)1 41 
Impact of adoption of Recognition and Measurement of Financial Assets and Financial Liabilities standard(c)
— (10)— — — (10)
Balance at December 31, 2018$(2)$— $(2,960)$(33)$— $(2,995)
OCI before reclassifications— — (289)6 (2)(285)
Amounts reclassified from AOCI— — 84 — 2 86 
Net current-period OCI— — (205)6 — (199)
Balance at December 31, 2019$(2)$— $(3,165)$(27)$— $(3,194)
OCI before reclassifications(3)— (357)4 — (356)
Amounts reclassified from AOCI— — 150 — — 150 
Net current-period OCI(3)— (207)4 — (206)
Balance at December 31, 2020$(5)$— $(3,372)$(23)$— $(3,400)
__________ 
(a)This AOCI component is included in the computation of net periodic pension and OPEB cost. See Note 15 — Retirement Benefits for additional information. See Exelon's Statements of Operations and Comprehensive Income for individual components of AOCI.
(b)All amounts are net of noncontrolling interests.
(c)Exelon adopted the new standard Recognition and Measurement of Financial Assets and Financial Liabilities. The standard was adopted as of January 1, 2018, which resulted in an increase to Retained earnings and Accumulated other comprehensive loss of $10 million for Exelon. The amounts reclassified related to Rabbi Trusts.
Schedule of Income Taxes Allocated to Other Comprehensive Income (Loss) Components
The following table presents income tax benefit (expense) allocated to each component of Exelon's other comprehensive income (loss):
 For the Year Ended December 31,
 202020192018
Pension and non-pension postretirement benefit plans:
Prior service benefit reclassified to periodic benefit cost$16 $23 $24 
Actuarial loss reclassified to periodic benefit cost(66)(52)(86)
Pension and non-pension postretirement benefit plans valuation adjustment122 100 50