Investment in Constellation Energy Nuclear Group, LLC (Tables)

12 Months Ended

Dec. 31, 2012

Equity Method Investments and Joint Ventures Tables [Line Items]

Schedule of total equity in earnings of investment in CENG

		For the Period March 12,
		through December 31,
	2012
Equity investment income	$	83
Amortization of basis difference in CENG		(182)
Total equity in earnings (losses) - CENG	$	(99)

Schedule of summarized income statement information for CENG

	Income/(Expense)			Accounts
	For the Period		Income	Receivable/
	March 12 through		Statement	(Accounts Payable)
Agreement	December 31, 2012		Classification	At December 31, 2012
PPA	$	(793)	Purchased power and fuel	$	(83)
PSAA		3	Operating revenues		-
SSA		42	Operating revenues		5