Changes in Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2014

Accumulated Other Comprehensive Income Loss [Line Items]

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

For The Six Months Ended June 30, 2014			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	$	120	$	2	$	(2,260)	$	(10)	$	108	$	(2,040)
	OCI before reclassifications		(11)		1		246		(1)		11		246
	Amounts reclassified from AOCI (b)		(62)		0		66		0		(116)		(112)
	Net current-period OCI		(73)		1		312		(1)		(105)		134
	Ending balance	$	47	$	3	$	(1,948)	$	(11)	$	3	$	(1,906)
Generation(a)
	Beginning balance	$	114	$	2	$	0	$	(10)	$	108	$	214
	OCI before reclassifications		(8)		(1)		0		(1)		11		1
	Amounts reclassified from AOCI (b)		(62)		0		0		0		(116)		(178)
	Net current-period OCI		(70)		(1)		0		(1)		(105)		(177)
	Ending balance	$	44	$	1	$	0	$	(11)	$	3	$	37
ComEd (a)
PECO (a)
	Beginning balance	$	0	$	1	$	0	$	0	$	0	$	1
	OCI before reclassifications		0		0		0		0		0		0
	Net current-period OCI		0		0		0		0		0		0
	Ending balance	$	0	$	1	$	0	$	0	$	0	$	1
BGE(a)

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

(b) See tables following changes in accumulated other comprehensive income tables for details about these reclassifications.

Schedule Of Other Comprehensive Income Loss Tax Table [TextBlock]

		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
Exelon
Pension and non-pension postretirement benefit plans:
	Prior service benefit reclassified to periodic benefit cost	$	5	$	0	$	5	$	1
	Actuarial loss reclassified to periodic cost		(23)		(32)		(46)		(66)
	Pension and non-pension post retirement benefit plans valuation adjustment		(166)		(1)		(159)		(50)
Change in unrealized loss on cash flow hedges			28		45		48		77
Change in unrealized income on equity investments			77		(5)		70		(23)
Deferred compensation unit valuation adjustment			0		(6)		0		(6)
Total		$	(79)	$	1	$	(82)	$	(67)
Generation
	Change in unrealized loss on cash flow hedges	$	25	$	89	$	44	$	175
	Change in unrealized income on equity investments		77		(5)		70		(23)
	Change in marketable securities		0		0		(2)		0
Total		$	102	$	84	$	112	$	152