Investment in Constellation Energy Nuclear Group, LLC (Tables)

9 Months Ended

Sep. 30, 2013

Equity Method Investments and Joint Ventures Tables [Line Items]

Schedule of total equity in earnings of investment in CENG

	Three Months			Three Months
	Ended September 30,			Ended September 30,
	2013		2012
Equity investment income	$	68	$	58
Amortization of basis difference in CENG		(31)		(57)
Total equity in earnings - CENG	$	37	$	1
	Nine Months			For the Period March 12,
	Ended September 30,			through September 30,
	2013		2012
Equity investment income (loss)	$	93	$	53
Amortization of basis difference in CENG		(88)		(131)
Total equity in earnings (losses) - CENG	$	5	$	(78)

Schedule of summarized income statement information for CENG

	Income/(Expense)		Income/(Expense)			Accounts
	Three Months		Nine Months		Income	Receivable/
	Ended		Ended		Statement	(Accounts Payable)
Agreement	September 30, 2013		September 30, 2013		Classification	At September 30, 2013
PPA	$	(269)	$	(748)	Purchased power and fuel	$	(76)
PSAA		1		3	Operating revenues		-
SSA		10		32	Operating revenues		4
	Income/(Expense)		Income/(Expense)			Accounts
	Three Months		For the Period		Income	Receivable/
	Ended		March 12 through		Statement	(Accounts Payable)
Agreement	September 30, 2012		September 30, 2012		Classification	At September 30, 2012
PPA	$	(282)	$	(541)	Purchased power and fuel	$	(86)
PSAA		1		2	Operating revenues		-
SSA		14		30	Operating revenues		5

Exelon Generation Co L L C [Member]

Equity Method Investments and Joint Ventures Tables [Line Items]

Schedule of total equity in earnings of investment in CENG

	Three Months			Three Months
	Ended September 30,			Ended September 30,
	2013		2012
Equity investment income	$	68	$	58
Amortization of basis difference in CENG		(31)		(57)
Total equity in earnings - CENG	$	37	$	1
	Nine Months			For the Period March 12,
	Ended September 30,			through September 30,
	2013		2012
Equity investment income (loss)	$	93	$	53
Amortization of basis difference in CENG		(88)		(131)
Total equity in earnings (losses) - CENG	$	5	$	(78)

Schedule of summarized income statement information for CENG

	Income/(Expense)		Income/(Expense)			Accounts
	Three Months		Nine Months		Income	Receivable/
	Ended		Ended		Statement	(Accounts Payable)
Agreement	September 30, 2013		September 30, 2013		Classification	At September 30, 2013
PPA	$	(269)	$	(748)	Purchased power and fuel	$	(76)
PSAA		1		3	Operating revenues		-
SSA		10		32	Operating revenues		4
	Income/(Expense)		Income/(Expense)			Accounts
	Three Months		For the Period		Income	Receivable/
	Ended		March 12 through		Statement	(Accounts Payable)
Agreement	September 30, 2012		September 30, 2012		Classification	At September 30, 2012
PPA	$	(282)	$	(541)	Purchased power and fuel	$	(86)
PSAA		1		2	Operating revenues		-
SSA		14		30	Operating revenues		5