Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2016

Commitments And Contingencies Tables Disclosure [Line Items]

Energy Commitments

s

Utility Energy Purchase Commitments

s

Fuel Purchase Commitments

s

Other Purchase Obligation

s

Commercial Commitments

The Registrants’ commercial commitments as of March 31, 2016, representing commitments potentially triggered by future events were as follows:

											Successor
	Exelon		Generation		ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Letters of credit (non-debt)(a)	$	1,628	$	1,560	$	16	$	22	$	2	$	1	$	—	$	—	$	—
Surety bonds(b)	950		852		10		9		10		16		9		4		3
Financing trust guarantees	628		—		200		178		250		—		—		—		—
Nuclear insurance premiums(c)	3,056		3,056		—		—		—		—		—		—		—
Guaranteed lease residual values(d)	20		—		—		—		—		20		6		8		5
Total commercial commitments	$	6,282	$	5,468	$	226	$	209	$	262	$	37	$	15	$	12	$	8

________

(a) Letters of credit (non-debt) - Exelon and certain subsidiaries maintain non-debt letters of credit to provide credit support for certain transactions as requested by third parties.

(b) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.

(c)

Accrued environmental liabilities

of March 31, 2016 and December 31, 2015, the Registrants had accrued the following undiscounted amounts for environmental liabilities in Other current liabilities and Other deferred credits and other liabilities within their respective Consolidated Balance Sheets:

March 31, 2016	Total Environmental Investigation and Remediation Reserve		Portion of Total Related to MGP Investigation and Remediation(a)
Exelon	$	399	$	298
Generation	68		—
ComEd	263		261
PECO	36		34
BGE	3		2
PHI (Successor)	29		1
Pepco	25		—
DPL	3		1
ACE	1		—

December 31, 2015	Total Environmental Investigation and Remediation Reserve		Portion of Total Related to MGP Investigation and Remediation(a)
Exelon	$	369	$	301
Generation	63		—
ComEd	266		264
PECO	37		35
BGE	3		2
PHI (Predecessor)	33		1
Pepco	24		—
DPL	3		1
ACE	1		—

_____________________________

(a) For BGE, includes reserve for Riverside, a gas purification site. See discussion below for additional information.

Exelon Generation Co L L C [Member] | Equity Method Investments [Member]

Commitments And Contingencies Tables Disclosure [Line Items]

Other Commitments

, Generation’s estimated commitment relating to its equity purchase agreements, including the in-kind services contributions, is anticipated to be as follows:

	Total
2016(a)	$	271
2017	21
2018	7
Total	$	299