Changes in Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2013

Accumulated Other Comprehensive Income Loss [Line Items]

Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block]

			Gains and (Losses) on Cash Flow Hedges		Unrealized Gains and (Losses) on Marketable Securities		Pension and Non-Pension Postretirement Benefit Plan items		Foreign Currency Items		AOCI of Equity Investments		Total
Exelon (a)
	Beginning balance	$	368	$	-	$	(3,137)	$	-	$	2	$	(2,767)
	OCI before reclassifications		25		(1)		73		(5)		46		138
	Amounts reclassified from AOCI (b)		(194)		-		157		-		5		(32)
	Net current-period OCI		(169)		(1)		230		(5)		51		106
	Ending balance	$	199	$	(1)	$	(2,907)	$	(5)	$	53	$	(2,661)
Generation (a)
	Beginning balance	$	512	$	-	$	-	$	-	$	1	$	513
	OCI before reclassifications		12		(1)		-		(5)		47		53
	Amounts reclassified from AOCI (b)		(328)		-		-		-		5		(323)
	Net current-period OCI		(316)		(1)		-		(5)		52		(270)
	Ending balance	$	196	$	(1)	$	-	$	(5)	$	53	$	243
ComEd (a)
PECO (a)
	Beginning balance	$	-	$	1	$	-	$	-	$	-	$	1
	OCI before reclassifications		-		-		-		-		-		-
	Amounts reclassified from AOCI (b)		-		-		-		-		-		-
	Net current-period OCI		-		-		-		-		-		-
	Ending balance	$	-	$	1	$	-	$	-	$	-	$	1
BGE (a)

(a) All amounts are net of tax. Amounts in parenthesis represent a decrease in accumulated other comprehensive income.

(b) See next table for details about these reclassifications.