Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Total Periodic Benefit Costs

The components of the Companies’ total periodic benefit cost for the three months ended March 31, 2021 and 2020 were as follows:

	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2021	2020	2021	2020
Service cost – including administrative expenses	$86	$73	$81	$69
Interest cost on projected benefit obligation	118	137	111	129
Expected return on plan assets	(276)	(258)	(262)	(245)
Recognition of net actuarial loss	199	175	189	165
Recognition of prior service credit	(4)	(4)	(5)	(5)
TOTAL PERIODIC BENEFIT COST	$123	$123	$114	$113
Cost capitalized	(39)	(31)	(37)	(29)
Reconciliation to rate level	(57)	(64)	(55)	(62)
Total expense recognized	$27	$28	$22	$22

The components of the Companies’ total periodic other postretirement benefit cost/(credit) for the three months ended March 31, 2021 and 2020 were as follows:

	For the Three Months Ended March 31,
	Con Edison		CECONY
(Millions of Dollars)	2021	2020	2021	2020
Service cost - including administrative expenses	$7	$5	$5	$4
Interest cost on projected other postretirement benefit obligation	8	9	7	8
Expected return on plan assets	(17)	(16)	(14)	(14)
Recognition of net actuarial loss	6	27	5	27
Recognition of prior service credit	(1)	(1)	—	(1)
TOTAL PERIODIC OTHER POSTRETIREMENT BENEFIT COST	$3	$24	$3	$24
Cost capitalized	(3)	(2)	(2)	(1)
Reconciliation to rate level	—	(22)	(2)	(24)
Total expense/(credit) recognized	$—	$—	$(1)	$(1)