Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2019

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 and six months ended June 30, 2019 and 2018.



	Pension Benefits Three Months Ended June 30,						Other Postretirement Benefits Three Months Ended June 30,
	2019			2018			2019			2018
Components of net periodic benefit cost:
Service cost	$	89		$	102		$	24		$	28
Interest cost	221			200			47			44
Expected return on assets	(306		)	(313		)	(38		)	(43		)
Amortization of:
Prior service benefit	—			—			(44		)	(47		)
Actuarial loss	103			157			10			16
Settlement charges	—			1			—			—
Net periodic benefit cost	$	107		$	147		$	(1	)	$	(2	)




	Pension Benefits Six Months Ended June 30,						Other Postretirement Benefits Six Months Ended June 30,
	2019			2018			2019			2018
Components of net periodic benefit cost:
Service cost	$	178		$	202		$	47		$	56
Interest cost	442			401			94			88
Expected return on assets	(612		)	(626		)	(77		)	(87		)
Amortization of:
Prior service cost (benefit)	—			1			(89		)	(93		)
Actuarial loss	206			314			23			33
Settlement charges	—			1			—			—
Net periodic benefit cost	$	214		$	293		$	(2	)	$	(3	)

Allocated Portion of Pension and Postretirement Benefit Costs

The amounts below represent Exelon's, Generation's, ComEd's, PECO's, BGE's, PHI's, Pepco's, DPL's, and ACE's pension and postretirement benefit plan costs. For Exelon, the service cost component is included in Operating and maintenance expense and Property, plant and equipment, net, for the three and six months ended June 30, 2019 and 2018, while the non-service cost components are included in Other, net and Regulatory assets for the three and six months ended June 30, 2019 and 2018. For the Registrants other than Exelon, 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 for the three and six months ended June 30, 2019 and 2018.



	Three Months Ended June 30,				Six Months Ended June 30,
Pension and Other Postretirement Benefit Costs	2019		2018		2019		2018
Exelon	$	106	$	145	$	212	$	290
Generation	31		51		62		100
ComEd	23		44		47		88
PECO	3		5		5		10
BGE	16		15		30		30
PHI	24		17		48		34
Pepco	6		3		12		8
DPL	4		2		8		3
ACE	4		3		8		6

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 during the three and six months ended June 30, 2019 and 2018, respectively.



	Three Months Ended June 30,				Six Months Ended June 30,
Savings Plan Matching Contributions	2019		2018		2019		2018
Exelon	$	33	$	50	$	64	$	82
Generation	14		28		28		43
ComEd	9		8		16		15
PECO	2		2		5		4
BGE	2		2		4		4
PHI	3		3		6		6
Pepco	1		1		2		2
DPL	1		1		1		1
ACE	—		—		1		1