Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2024

Calculation of Net Periodic Benefit Costs

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, 2024 and 2023.
















	Pension Benefits				OPEB
	Three Months Ended March 31,				Three Months Ended March 31,
	2024		2023		2024		2023
Components of net periodic benefit cost
Service cost	$	42	$	39	$	7	$	6
Interest cost	141		145		24		25
Expected return on assets	(184)		(189)		(21)		(21)
Amortization of:
Prior service cost (credit)	1		1		(2)		(2)
Actuarial loss	53		41		—		—


Net periodic benefit cost	$	53	$	37	$	8	$	8

Allocated Portion of Pension and Postretirement Benefit Costs

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 the Utility Registrants, which apply multi-employer accounting, 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 (Benefit)		2024		2023
Exelon		$	61	$	45
ComEd		17		6
PECO		—		(3)
BGE		15		14
PHI		23		24
Pepco		9		8
DPL		4		4
ACE		3		4

Defined Contribution Savings Plans

The Registrants participate in a 401(k) defined contribution savings plan that is sponsored by Exelon. The plan is qualified under applicable sections of the IRC and allows 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 employer contributions and employer matching contributions to the savings plan for the three months ended March 31, 2024 and 2023.


	Three Months Ended March 31,
Savings Plan Employer Contributions		2024		2023
Exelon		$	22	$	21
ComEd		10		9
PECO		3		3
BGE		3		2
PHI		2		3
Pepco		1		1
DPL		1		1
ACE		—		—