Retirement Benefits (All Registrants)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Retirement Benefits (All Registrants)

Retirement Benefits (All Registrants)

Defined Benefit Pension and OPEB

During the first quarter of 2021, Exelon received an updated valuation of its pension and OPEB to reflect actual census data as of January 1, 2021. This valuation resulted in an increase to the pension obligations of $33 million and a decrease to the OPEB obligations of $9 million. Additionally, accumulated other comprehensive loss increased by $1 million (after-tax) and regulatory assets and liabilities increased by $21 million and $1 million, respectively.

The majority of the 2021 pension benefit cost for the Exelon-sponsored plans is calculated using an expected long-term rate of return on plan assets of 7.00% and a discount rate of 2.58%. The majority of the 2021 OPEB cost is calculated using an expected long-term rate of return on plan assets of 6.46% for funded plans and a discount rate of 2.51%.

A portion of the net periodic benefit cost for all plans is capitalized within the Consolidated Balance Sheets. The following table presents the components of Exelon's net periodic benefit costs, prior to capitalization, for the three months ended March 31, 2021 and 2020.

	Pension Benefits				OPEB
	Three Months Ended March 31,				Three Months Ended March 31,
	2021		2020		2021		2020
Components of net periodic benefit cost:
Service cost	$	110	$	97	$	21	$	23
Interest cost	161		189		28		38
Expected return on assets	(336)		(318)		(40)		(41)
Amortization of:
Prior service cost (credit)	1		1		(8)		(31)
Actuarial loss	150		128		9		12
Curtailment benefits	—		—		(1)		—
Net periodic benefit cost	$	86	$	97	$	9	$	1

The amounts below represent the Registrants' allocated pension and OPEB costs. For Exelon, the service cost component is included in Operating and maintenance expense and Property, plant, and equipment, net while the non-service cost components are included in Other, net and Regulatory assets. For Generation and the Utility Registrants, the service cost and non-service cost components are included in Operating and maintenance expense and Property, plant, and equipment, net in their consolidated financial statements.

	Three Months Ended March 31,
Pension and OPEB Costs	2021		2020
Exelon	$	95	$	98
Generation	26		27
ComEd	32		28
PECO	2		1
BGE	15		16
PHI	12		17
Pepco	2		3
DPL	1		1
ACE	3		3

Defined Contribution Savings Plans

The Registrants participate in various 401(k) defined contribution savings plans that are sponsored by Exelon. The plans are qualified under applicable sections of the IRC and allow employees to contribute a portion of their pre-tax and/or after-tax income in accordance with specified guidelines. All Registrants match a percentage of the employee contributions up to certain limits. The following table presents the matching contributions to the savings plans for the three months ended March 31, 2021 and 2020, respectively.

	Three Months Ended March 31,
Savings Plans Matching Contributions	2021		2020
Exelon	$	33	$	33
Generation	13		13
ComEd	8		7
PECO	3		3
BGE	2		2
PHI	3		3
Pepco	1		1
DPL	1		1