Shareholder Equity Shareholder Equity (Tables)

12 Months Ended

Dec. 31, 2015

Shareholder [Abstract]

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

The following table presents common stock authorized and outstanding as of December 31, 2015 and 2014:

				December 31,
				2015	2014
	Par Value		Shares Authorized	Shares Outstanding
Common Stock
Exelon	no par value		2,000,000,000	919,924,742	859,833,343
ComEd	$	12.50	250,000,000	127,016,973	127,016,947
PECO	no par value		500,000,000	170,478,507	170,478,507
BGE	no par value		175,000,000	1,000	1,000

Schedule of Auction Market Preferred Securities by Stock Series [Table Text Block]

			December 31,
	Redemption Price (a)		2015	2014	2015		2014
			Shares Outstanding		Dollar Amount
Series (without mandatory redemption)
7.125%, 1993 Series	$	100.00	400,000	400,000	$	40	$	40
6.97%, 1993 Series	100.00		500,000	500,000	50		50
6.70%, 1993 Series	100.00		400,000	400,000	40		40
6.99%, 1995 Series	100.00		600,000	600,000	60		60
Total preference stock			1,900,000	1,900,000	$	190	$	190

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(a) Redeemable, at the option of BGE, at the indicated dollar amounts per share, plus accrued and unpaid dividends.

Schedule of Stock by Class