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v3.20.2

Other Postretirement Benefits - Periodic Postretirement Benefit Costs (Details) - Other Postretirement Benefits - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | $ 5 | $ 4 | $ 16 | $ 13
Interest cost on accumulated other postretirement benefit obligation | 9 | 11 | 28 | 33
Expected return on plan assets | (16) | (16) | (49) | (49)
Recognition of net actuarial loss/(gain) | 3 | (2) | 34 | (6)
Recognition of prior service credit | (1) | (1) | (3) | (2)
TOTAL PERIODIC OTHER POSTRETIREMENT BENEFIT COST/(CREDIT) | 0 | (4) | 26 | (11)
Cost capitalized | (2) | (1) | (7) | (6)
Reconciliation to rate level | 2 | 3 | (19) | 10
Total credit recognized | 0 | (2) | 0 | (7)
CECONY |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | 4 | 3 | 12 | 9
Interest cost on accumulated other postretirement benefit obligation | 8 | 9 | 23 | 27
Expected return on plan assets | (14) | (14) | (41) | (41)
Recognition of net actuarial loss/(gain) | 3 | (2) | 32 | (7)
Recognition of prior service credit | 0 | 0 | (1) | (1)
TOTAL PERIODIC OTHER POSTRETIREMENT BENEFIT COST/(CREDIT) | 1 | (4) | 25 | (13)
Cost capitalized | (2) | (2) | (5) | (4)
Reconciliation to rate level | 0 | 2 | (24) | 6
Total credit recognized | $ (1) | $ (4) | $ (4) | $ (11)

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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