Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2011

Fair Value of Financial Instruments

Schedule of carrying amounts and fair values of financial instruments

At June 30, 2011		Carrying Amount		Fair Value
		(In millions)
Investments and other assets—Constellation Energy		$	179.5	$	179.8
Fixed-rate long-term debt:
	Constellation Energy (including BGE)		3,843.0		4,187.5
	BGE		2,113.9		2,284.1
Variable-rate long-term debt:
	Constellation Energy (including BGE)		671.8		671.8
	BGE		—		—