Serverance And Plant Retirements (Tables)

6 Months Ended

Jun. 30, 2014

Corporate Restructuring And Plant Retirements Tables [Abstract]

Total severance benefits costs, recorded as operating and maintenance expense

Three Months Ended June 30, 2014
Severance Benefits		Exelon		Generation
Severance charges (a)	$	1	$	1
Total severance benefits	$	1	$	1
Six Months Ended June 30, 2014
Severance Benefits		Exelon		Generation
Severance charges (a)	$	2	$	2
Total severance benefits	$	2	$	2

Activity of severance obligations for the corporate restructuring (excluding obligations recorded in equity)

Six Months Ended June 30, 2014
Severance Liability		Exelon		Generation
Balance at December 31, 2013	$	2	$	2
Integration of CENG (a)		19		19
Severance charges		2		2
Payments		(3)		(3)
Balance at June 30, 2014	$	20	$	20

Six Months Ended June 30, 2014
Severance Liability		Exelon		Generation		ComEd		PECO		BGE
Balance at December 31, 2013	$	53	$	10	$	0	$	0	$	6
Payments		(20)		(2)		0		0		(3)
Balance at June 30, 2014	$	33	$	8	$	0	$	0	$	3

Schedule Of Severance Costs [TableTextBlock]

			Exelon		Generation		ComEd		PECO		BGE
Three Months Ending
	June 30, 2014	$	4	$	2	$	0	$	0	$	0
	June 30, 2013	$	1	$	1	$	0	$	0	$	0
Six Months Ending
	June 30, 2014	$	6	$	4	$	0	$	0	$	0
	June 30, 2013	$	2	$	1	$	1	$	0	$	0