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v3.23.3

Other Postretirement Benefits - Periodic Postretirement Benefit Costs (Details) - Other Postretirement Benefits - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost - including administrative expenses | $ 4 | $ 5 | $ 11 | $ 14
Interest cost on projected other postretirement benefit obligation | 14 | 8 | 43 | 26
Expected return on plan assets | (18) | (18) | (53) | (54)
Recognition of net actuarial gain | (4) | (4) | (12) | (11)
Recognition of prior service credit | 0 | 0 | (1) | (1)
TOTAL PERIODIC OTHER POSTRETIREMENT CREDIT | (4) | (9) | (12) | (26)
Cost capitalized | (2) | (2) | (5) | (6)
Reconciliation to rate level | 1 | 7 | 2 | 22
Total credit recognized | (5) | (4) | (15) | (10)
CECONY | Subsidiaries |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost - including administrative expenses | 3 | 4 | 9 | 11
Interest cost on projected other postretirement benefit obligation | 12 | 8 | 37 | 23
Expected return on plan assets | (14) | (14) | (42) | (43)
Recognition of net actuarial gain | (2) | (3) | (6) | (7)
Recognition of prior service credit | 0 | 0 | 0 | 0
TOTAL PERIODIC OTHER POSTRETIREMENT CREDIT | (1) | (5) | (2) | (16)
Cost capitalized | (2) | (2) | (4) | (5)
Reconciliation to rate level | 0 | 6 | (2) | 18
Total credit recognized | $ (3) | $ (1) | $ (8) | $ (3)

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