Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data [Line Items]

Quarterly Financial Information

The data shown below, which may not equal the total for the year due to the effects of rounding and dilution, includes all adjustments that Exelon considers necessary for a fair presentation of such amounts:

	Operating Revenues				Operating Income						Net Income on Common Stock
	2015		2014		2015			2014			2015		2014
Quarter ended:
March 31	$	8,830	$	7,237	$	1,366	(a)	$	168	(b)	$	693	$	90
June 30	6,514		6,024		1,134		(a)	842		(b)	638		522
September 30	7,401		6,912		1,200		(a)	1,738		(b)	629		993
December 31	6,702		7,255		707			348			309		18		(c)

____________________________ 

(a) In the first, second, and third quarter of 2015, Exelon reclassified $(1) million, $7 million, and $2 million, respectively, to Operating income for presentation purposes in Exelon's Consolidated Statements of Operations and Comprehensive Income. The reclassifications did not affect Exelon's Net (Loss) Income on Common Stock.

(b) In the first, second, and third quarter of 2014, Exelon reclassified $5 million, $13 million, and $339 million, respectively, to Operating income for presentation purposes in Exelon's Consolidated Statements of Operations and Comprehensive Income. The reclassifications did not affect Exelon's Net (Loss) Income on Common Stock.

(c) Includes charges to earnings related to the impairments of certain generating assets which were held for sale and certain Upstream exploration assets. See Note 8—Impairment of Long-Lived Assets of the Combined Notes to Consolidated Financial Statements for additional information.

Average Basic And Diluted Shares And Net Income Per Basic And Diluted Share

	Average Basic Shares Outstanding (in millions)		Net Income per Basic Share
	2015	2014	2015		2014
Quarter ended:
March 31	862	858	$	0.80	$	0.10
June 30	863	860	0.74		0.61
September 30	913	861	0.69		1.15
December 31	921	861	0.34		0.02
	Average Diluted Shares Outstanding (in millions)		Net Income per Diluted Share
	2015	2014	2015		2014
Quarter ended:
March 31	867	861	$	0.80	$	0.10
June 30	866	864	0.74		0.60
September 30	915	863	0.69		1.15
December 31	924	868	0.33		0.02

Per Share Information

The following table presents the New York Stock Exchange—Composite Common Stock Prices and dividends by quarter on a per share basis:

	2015								2014
	Fourth Quarter		Third Quarter		Second Quarter		First Quarter		Fourth Quarter		Third Quarter		Second Quarter		First Quarter
High price	$	31.37	$	34.44	$	34.98	$	38.25	$	38.93	$	36.26	$	37.73	$	33.94
Low price	25.09		28.41		31.28		31.71		33.07		30.66		33.11		26.45
Close	27.77		29.70		31.42		33.61		37.08		34.09		36.48		33.56
Dividends	0.310		0.310		0.310		0.310		0.310		0.310		0.310		0.310

Exelon Generation Co L L C [Member]

Quarterly Financial Data [Line Items]

Quarterly Financial Information

The data shown below includes all adjustments that Generation considers necessary for a fair presentation of such amounts:

	Operating Revenues				Operating (Loss) Income							Net (Loss) Income on Membership Interest
	2015		2014		2015 (a)			2014				2015		2014
Quarter ended:
March 31	$	5,840	$	4,390	$	719	(a)	$	(384	)	(b)	$	443	$	(185	)
June 30	4,232		3,789		703		(a)	441			(b)	398		340
September 30	4,768		4,412		622		(a)	1,225			(b)	377		771
December 31	4,294		4,802		230			(105		)		154		(91		)

____________________________ 

(a) In the first, second, and third quarter of 2015, Generation reclassified $(1) million, $7 million, and $1 million, respectively, to Operating (loss) income for presentation purposes in Generation's Consolidated Statements of Operations and Comprehensive Income. The reclassifications did not affect Generation's Net (Loss) Income on Membership Interest.

(b) In the first, second, and third quarter of 2014, Generation reclassified $5 million, $12 million, and $338 million, respectively, to Operating (loss) income for presentation purposes in Generation's Consolidated Statements of Operations and Comprehensive Income. The reclassifications did not affect Generation's Net (Loss) Income on Membership Interest.

Commonwealth Edison Co [Member]

Quarterly Financial Data [Line Items]

Quarterly Financial Information

The data shown below includes all adjustments that ComEd considers necessary for a fair presentation of such amounts:

	Operating Revenues				Operating Income					Net Income
	2015		2014		2015		2014			2015		2014
Quarter ended:
March 31	$	1,185	$	1,134	$	230	$	238		$	90	$	98
June 30	1,148		1,128		243		258		(a)	99		111
September 30	1,376		1,222		327		287		(a)	149		126
December 31	1,196		1,079		217		196			87		73

____________________________ 

(a) In both the second and third quarter of 2014, ComEd reclassified $1 million to Operating income for presentation purposes in ComEd's Consolidated Statements of Operations and Comprehensive Income. The reclassifications did not affect ComEd's Net (Loss) Income.

PECO Energy Co [Member]

Quarterly Financial Data [Line Items]

Quarterly Financial Information

The data shown below includes all adjustments that PECO considers necessary for a fair presentation of such amounts:

	Operating Revenues				Operating Income				Net Income on Common Stock
	2015		2014		2015		2014		2015		2014
Quarter ended:
March 31	$	985	$	993	$	223	$	149	$	139	$	89
June 30	661		656		124		134		70		84
September 30	740		693		154		133		90		81
December 31	645		750		128		156		79		98

Baltimore Gas and Electric Company [Member]

Quarterly Financial Data [Line Items]

Quarterly Financial Information

The data shown below includes all adjustments that BGE considers necessary for a fair presentation of such amounts:

	Operating Revenues				Operating Income				Net Income attributable to Common Shareholders
	2015		2014		2015		2014		2015		2014
Quarter ended:
March 31	$	1,036	$	1,054	$	204	$	169	$	106	$	85
June 30	628		653		99		55		44		16
September 30	725		697		110		102		51		46
December 31	746		761		144		113		74		52