Debt and Credit Agreements Year-End (Tables)

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Commonwealth Edison Co [Member]

Mar. 31, 2013

Baltimore Gas and Electric Company [Member]

Debt Instrument [Line Items]

Schedule Of Short Term Debt [Text Block]

Type of Credit Facility		Amount (a)		Expiration Dates	Capacity Type
Exelon Corporate		(In billions)
	Syndicated Revolver	$	0.5	August 2018	Letters of credit and cash
Generation
	Syndicated Revolver		5.3	August 2018	Letters of credit and cash
	Bilateral		0.3	December 2015 and March 2016	Letters of credit and cash
	Bilateral		0.1	January 2015	Letters of credit
ComEd
	Syndicated Revolver		1.0	March 2019	Letters of credit and cash
PECO
	Syndicated Revolver		0.6	August 2018	Letters of credit and cash
BGE
	Syndicated Revolver		0.6	August 2018	Letters of credit and cash
	Total	$	8.4

• Excludes additional credit facility agreements for Generation, ComEd, PECO and BGE with aggregate commitments of $50 million, $34 million, $34 million and $5 million, respectively, arranged with minority and community banks located primarily within ComEd's, PECO's and BGE's service territories. These facilities expire on October 18, 2014 andare solely utilized to issue letters of credit. As of March 31, 2014, letters of credit issued under these agreements for Generation, ComEd, PECO and BGE totaled $20 million, $17 million, $21 million and $1 million, respectively.

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