Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2013

Accounts Receivable [Line Items]

Schedule Of Accounts Notes Loans And Financing Receivable [Text Block]

2013	Exelon		Generation			ComEd		PECO			BGE
Unbilled customer revenues	$	1,151	$	584	(a)	$	201	$	161		$	205
Allowance for uncollectible accounts(b)		(272)		(57)			(62)		(107)	(c)		(46)
2012	Exelon		Generation			ComEd		PECO			BGE
Unbilled customer revenues	$	1,094	$	535	(a)	$	213	$	164		$	182
Allowance for uncollectible accounts(b)		(293)		(84)			(70)		(99)	(c)		(40)

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(a) Represents unbilled portion of retail receivables estimated under Exelon's unbilled critical accounting policy.

(b) Includes the allowance for uncollectible accounts on customer and other accounts receivable.

(c)       Includes an allowance for uncollectible accounts of $8 million and $7 million at December 31, 2013 and 2012, respectively, related to PECO's current installment plan receivables described below.