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Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]  
Schedule Of Pension And OPEB Plan Costs Year Ended December 31, 2021 2020 2019 Pension costs $ 70 $ 71 $ 63OPEB costs 25 19 41Total benefit costs 95 90 104Less amounts recognized principally as property, regulatory asset or regulatory liability (19) (13) (27)Net amounts recognized as operation and maintenance expense or other deductions $ 76 $ 77 $ 77
Schedule Of Detailed Pension And OPEB Benefit Information Pension Plans OPEB Plans Year Ended December 31, Year Ended December 31, 2021 2020 2019 2021 2020 2019 Assumptions Used to Determine Net Periodic Pension and OPEB Costs: Discount rate 2.40% 3.13% 4.18% 2.58% 3.29% 4.41%Expected return on plan assets 4.35% 4.94% 5.42% 5.24% 5.90% 6.19%Rate of compensation increase 4.80% 4.64% 4.53% - - - Components of Net Pension and OPEB Costs: Service cost $ 33 $ 29 $ 25 $ 5 $ 6 $ 6Interest cost 84 103 128 26 32 43Expected return on assets (99) (109) (119) (7) (8) (7)Amortization of prior service cost (credit) - - - (17) (20) (20)Amortization of net loss 52 48 29 18 10 19Curtailment cost (credit) - - - - (1) -Net periodic pension and OPEB costs $ 70 $ 71 $ 63 $ 25 $ 19 $ 41 Other Changes in Plan Assets and Benefit Obligations Recognized as Regulatory Assets or in Other Comprehensive Income: Curtailment $ - $ - $ - $ - $ 2 $ -Net loss (gain) (164) 61 - (142) 14 (22)Amortization of net loss (52) (48) (29) (18) (10) (19)Amortization of prior service (cost) credit - - - 17 20 20Total recognized as regulatory assets or other comprehensive income (216) 13 (29) (143) 26 (21)Total recognized in net periodic pension and OPEB costs and as regulatory assets or other comprehensive income $ (146) $ 84 $ 34 $ (118) $ 45 $ 20
Schedule Of Assumptions Used Pension Plans OPEB Plans Year Ended December 31, Year Ended December 31, 2021 2020 2019 2021 2020 2019 Assumptions Used to Determine Benefit Obligations at Period End: Discount rate 2.75% 2.40% 3.13% 2.91% 2.58% 3.29%Rate of compensation increase 4.98% 4.80% 4.64% - - -
Schedule Of Changes In Projected Benefit Obligations And Changes In Fair Value Of Plan Assets And Net Funded Status Pension Plans OPEB Plans Year Ended December 31, Year Ended December 31, 2021 2020 2019 2021 2020 2019 Change in Projected Benefit Obligation: Projected benefit obligation at beginning of year $ 3,596 $ 3,400 $ 3,162 $ 1,013 $ 999 $ 1,006Service cost 33 29 25 5 6 6Interest cost 84 103 128 26 32 43Participant contributions - - - 19 18 19Actuarial loss (gain) (95) 302 367 (136) 20 (5)Benefits paid (171) (165) (164) (66) (63) (70)Curtailment - - - - 1 -Settlements (89) (73) (118) - - -Projected benefit obligation at end of year $ 3,358 $ 3,596 $ 3,400 $ 861 $ 1,013 $ 999Accumulated benefit obligation at end of year $ 3,199 $ 3,433 $ 3,283 $ - $ - $ - Change in Plan Assets: Fair value of assets at beginning of year $ 2,740 $ 2,494 $ 2,249 $ 145 $ 141 $ 132Actual return on assets 168 350 486 13 14 25Employer contributions 21 134 41 35 35 35Participant contributions - - - 19 18 19Benefits paid (171) (165) (164) (66) (63) (70)Settlements (89) (73) (118) - - -Fair value of assets at end of year $ 2,669 $ 2,740 $ 2,494 $ 146 $ 145 $ 141 Funded Status: Projected benefit obligation at end of year $ (3,358) $ (3,596) $ (3,400) $ (861) $ (1,013) $ (999)Fair value of assets at end of year 2,669 2,740 2,494 146 145 141Funded status at end of year $ (689) $ (856) $ (906) $ (715) $ (868) $ (858)
Schedule Of Amounts Recognized In Balance Sheet Pension Plans OPEB Plans At December 31, At December 31, 2021 2020 2021 2020 Amounts Recognized in the Balance Sheet Consist of: Liabilities: Other current liabilities $ (5) $ (5) $ (12) $ (14)Other noncurrent liabilities (705) (863) (703) (854)Net liability recognized $ (710) $ (868) $ (715) $ (868)Assets: Other noncurrent assets $ 21 $ 12 $ - $ -Regulatory assets: Net loss (gain) 355 556 (27) 132Prior service credit - - - (16)Net regulatory assets recognized 355 556 (27) 116Net assets recognized $ 376 $ 568 $ (27) $ 116Accumulated other comprehensive net loss $ 93 $ 108 $ 3 $ 3
Schedule Of Health Care Cost Trend Rates Year Ended December 31, 2021 2020 2019 Assumed Health Care Cost Trend Rates – Not Medicare Eligible: Health care cost trend rate assumed for next year 6.70% 6.90% 7.20%Rate to which the cost trend is expected to decline (the ultimate trend rate) 4.50% 4.50% 4.50%Year that the rate reaches the ultimate trend rate 2029 2029 2029 Assumed Health Care Cost Trend Rates – Medicare Eligible: Health care cost trend rate assumed for next year 7.50% 7.80% 8.00%Rate to which the cost trend is expected to decline (the ultimate trend rate) 4.50% 4.50% 4.50%Year that the rate reaches the ultimate trend rate 2031 2030 2029
Schedule Of Projected Benefit Obligations And Accumulated Benefit Obligations In Excess Of Plan Assets Fair Value The following table provides information regarding pension plans with projected benefit obligations (PBO) and accumulated benefit obligations (ABO) in excess of the fair value of plan assets. At December 31, 2021 2020Pension Plans with PBO and ABO in Excess of Plan Assets (a): Projected benefit obligations $ 3,358 $ 3,596Accumulated benefit obligations $ 3,199 $ 3,433Plan assets $ 2,669 $ 2,740_________ (a)PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan are included. Oncor’s obligations with respect to the Vistra Retirement Plan are overfunded. As of December 31, 2021, PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan were $187 million, $185 million and $208 million, respectively. As of December 31, 2020, PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan were $196 million, $194 million and $208 million, respectively. The following table provides information regarding OPEB Plans with accumulated projected benefit obligations (APBO) in excess of the fair value of plan assets. At December 31, 2021 2020OPEB Plans with APBO in Excess of Plan Assets Accumulated postretirement benefit obligations $ 861 $ 1,013Plan assets $ 146 $ 145
Schedule Of Target Asset Allocation Ranges By Asset Category Target Allocation RangesAsset Category Recoverable Non-recoverable International equities 12% - 20% 5% - 11%U.S. equities 15% - 23% 6% - 12%Real estate 3% - 7% -Credit strategies 5% - 9% 4% - 8%Fixed income 48% - 58% 72% - 82%
Schedule Of Expected Long-Term Rate Of Return On Assets Assumptions Pension Plans OPEB PlansAsset Class Expected Long-Term Rate of Return Asset Class Expected Long-Term Rate of Return International equity securities 7.05% 401(h) accounts 5.78%U.S. equity securities 6.10% Life insurance VEBA 5.70%Real estate 5.40% Union VEBA 5.70%Credit strategies 5.50% Non-union VEBA 1.90%Fixed income securities 3.07% Shared retiree VEBA 1.90%Weighted average (a) 4.87% Weighted average 5.61%_____________(a)The 2022 expected long-term rate of return for the nonregulated portion of the Oncor Retirement Plan is 4.17%, and for Oncor’s obligations with respect to the Vistra Retirement Plan is 4.66%.
Schedule Of Contributions Year Ended December 31, 2021 2020 2019 Pension plans contributions $ 21 $ 134 $ 41OPEB Plans contributions 35 35 35Total contributions $ 56 $ 169 $ 76
Schedule Of Estimated Future Benefit Payments 2022 2023 2024 2025 2026 2027-31 Pension plans $ 181 $ 184 $ 188 $ 191 $ 192 $ 950OPEB Plans $ 45 $ 47 $ 48 $ 48 $ 49 $ 241
Pension Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule Of Assets Fair Value Measured On Recurring Basis At December 31, 2021 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ - $ 9 $ - $ 9Equity securities: U.S. 65 1 - 66International 138 1 - 139Fixed income securities: Corporate bonds (a) - 879 - 879U.S. Treasuries - 55 - 55Other (b) - 50 - 50Total assets in the fair value hierarchy $ 203 $ 995 $ - 1,198Total assets measured at net asset value (c) 1,471Total fair value of plan assets $ 2,669 At December 31, 2020 Level 1 Level 2 Level 3 Total Asset Category Equity securities: U.S. $ 220 $ 1 $ - $ 221International 330 1 - 331Fixed income securities: Corporate bonds (a) - 910 - 910U.S. Treasuries - 46 - 46Other (b) - 57 - 57Total assets in the fair value hierarchy $ 550 $ 1,015 $ - 1,565Total assets measured at net asset value (c) 1,175Total fair value of plan assets $ 2,740_____________(a)Substantially all corporate bonds are rated investment grade by Fitch, Moody’s or S&P.(b)Other consists primarily of municipal bonds, emerging market debt, bank loans and fixed income derivative instruments.(c)Fair value was measured using the net asset value (NAV) per share as a practical expedient as the investments did not have a readily determinable fair value and are not required to be classified in the fair value hierarchy. The NAV fair value amounts presented here are intended to permit a reconciliation to the total fair value of plan assets.
OPEB Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule Of Assets Fair Value Measured On Recurring Basis At December 31, 2021 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ 9 $ - $ - $ 9Equity securities: U.S. 16 - - 16International 17 - - 17Fixed income securities: Corporate bonds (a) - 37 - 37U.S. Treasuries - 2 - 2Other (b) 16 2 - 18Total assets in the fair value hierarchy $ 58 $ 41 $ - 99Total assets measured at net asset value (c) 47Total fair value of plan assets $ 146 At December 31, 2020 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ 9 $ - $ - $ 9Equity securities: U.S. 24 - - 24International 25 - - 25Fixed income securities: Corporate bonds (a) - 34 - 34U.S. Treasuries - 1 - 1Other (b) 19 3 - 22Total assets in the fair value hierarchy $ 77 $ 38 $ - 115Total assets measured at net asset value (c) 30Total fair value of plan assets $ 145_____________(a)Substantially all corporate bonds are rated investment grade by Fitch, Moody’s or S&P.(b)Other consists primarily of diversified bond mutual funds.(c)Fair value was measured using the net asset value (NAV) per share as a practical expedient as the investments did not have a readily determinable fair value and are not required to be classified in the fair value hierarchy. The NAV fair value amounts presented here are intended to permit a reconciliation to the total fair value of plan assets.