Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule Of Pension And Other Postretirement Benefit Costs

The amounts below represent Generation, ComEd, PECO, BGE, PHI, Pepco, DPL, ACE, BSC and PHISCO's allocated portion of the pension and postretirement benefit plan costs, which were included in Property, plant and equipment within the respective Consolidated Balance Sheets and Operating and maintenance expense within the Consolidated Statement of Operations and Comprehensive Income during the three months ended March 31, 2016 and 2015.

	Three Months Ended March 31,
Pension and Other Postretirement Benefit Costs	2016		2015
Exelon	$	136	$	160
Generation	54		67
ComEd	41		52
PECO	8		10
BGE	16		17
BSC(a)	14		14
Pepco(b)	8		8
DPL(b)	5		4
ACE(b)	4		4
PHISCO(a)(b)	9		8

	Successor		Predecessor
Pension and Other Postretirement Benefit Costs	March 24, 2016 to March 31, 2016		January 1, 2016 to March 23, 2016		Three Months Ended March 31, 2015
PHI	$	3	$	23	$	24

_________ 

(a) These amounts primarily represent amounts billed to Exelon’s subsidiaries through intercompany allocations. These amounts are not included in the Generation, ComEd, PECO, BGE, PHI, Pepco, DPL or ACE amounts above.

Schedule Of Defined Contributions

The following table presents the matching contributions to the savings plans during the three months ended March 31, 2016 and 2015:

	Three Months Ended March 31,
Savings Plan Matching Contributions	2016		2015
Exelon	$	26	$	22
Generation	12		13
ComEd	6		5
PECO	2		1
BGE	1		2
BSC(a)	5		1
Pepco(b)	1		1
DPL(b)	1		—
PHISCO(a)(b)	1		2

	Successor		Predecessor
Savings Plan Matching Contributions	March 24, 2016 to March 31, 2016		January 1, 2016 to March 23, 2016		Three Months Ended March 31, 2015
PHI	$	—	$	3	$	3

_________ 

(a) These amounts primarily represent amounts billed to Exelon and PHI's subsidiaries through intercompany allocations. These costs are not included in the Generation, ComEd, PECO, BGE, Pepco and DPL amounts above.

Schedule of Net Benefit Costs [Table Text Block]

	Pension Benefits Three Months Ended March 31,						Other Postretirement Benefits Three Months Ended March 31,
	2016(a)			2015			2016(a)			2015
Components of net periodic benefit cost:
Service cost	$	78		$	82		$	26		$	30
Interest cost	190			178			43			42
Expected return on assets	(263		)	(257		)	(38		)	(38		)
Amortization of:
Prior service cost (benefit)	3			3			(44		)	(43		)
Actuarial loss	127			143			14			20
Net periodic benefit cost	$	135		$	149		$	1		$	11

_______

(a) PHI net periodic benefit costs for the period prior to the merger are not included in the table above.

	Predecessor
	PHI
	Pension Benefits						Other Postretirement Benefits
Components of net periodic benefit cost:	January 1, 2016 to March 23, 2016			Three Months Ended March 31, 2015			January 1, 2016 to March 23, 2016			Three Months Ended March 31, 2015
Service cost	$	12		$	14		$	1		$	2
Interest cost	26			27			6			6
Expected return on assets	(30		)	(35		)	(5		)	(6		)
Amortization of:
Prior service cost (benefit)	—			—			(3		)	(3		)
Actuarial loss	14			16			2			3
Net periodic benefit cost	$	22		$	22		$	1		$	2