Income Taxes (Tables)

6 Months Ended

Jun. 30, 2015

Income Tax Disclosure [Abstract]

Effective Income Tax Rate Reconciliation

For the Three Months Ended June 30, 2015	Exelon		Generation		ComEd		PECO		BGE
U.S. Federal statutory rate	35.0	%	35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
State income taxes, net of Federal income tax benefit	3.9		3.4		5.6		1.4		5.3
Qualified nuclear decommissioning trust fund income	(1.0	)	(1.7	)	—		—		—
Domestic production activities deduction	(2.0	)	(3.4	)	—		—		—
Health care reform legislation	—		—		—		—		0.1
Amortization of investment tax credit, net deferred taxes	(0.6	)	(0.9	)	(0.3	)	(0.1	)	(0.2	)
Plant basis differences	(1.0	)	—		(0.1	)	(9.0	)	(0.5	)
Production tax credits and other credits	(1.3	)	(2.2	)	—		—		—
Noncontrolling interest	(0.4	)	(0.6	)	—		—		—
Other	1.4		2.0		0.5		0.5		0.8
Effective income tax rate	34.0	%	31.6	%	40.7	%	27.8	%	40.5	%

For the Six Months Ended June 30, 2015	Exelon		Generation		ComEd		PECO		BGE
U.S. Federal statutory rate	35.0	%	35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
State income taxes, net of Federal income tax benefit	3.2		3.0		5.3		1.3		5.3
Qualified nuclear decommissioning trust fund income	0.6		0.9		—		—		—
Domestic production activities deduction	(2.1	)	(3.4	)	—		—		—
Health care reform legislation	—		—		—		—		0.2
Amortization of investment tax credit, net deferred taxes	(0.8	)	(1.1	)	(0.3	)	(0.1	)	(0.1	)
Plant basis differences	(1.1	)	—		(0.2	)	(7.5	)	(0.3	)
Production tax credits and other credits	(1.6	)	(2.5	)	—		—		—
Noncontrolling interest	(0.6	)	(0.8	)	—		—		—
Other	0.8		0.6		0.4		0.2		—
Effective income tax rate	33.4	%	31.7	%	40.2	%	28.9	%	40.1	%

For the Three Months Ended June 30, 2014	Exelon		Generation		ComEd		PECO		BGE
U.S. Federal statutory rate	35.0	%	35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
State income taxes, net of Federal income tax benefit	2.1		1.7		4.6		(0.5	)	4.1
Qualified nuclear decommissioning trust fund income	4.1		6.0		—		—		—
Domestic production activities deduction	(2.0	)	(2.9	)	—		—		—
Health care reform legislation	—		—		0.2		—		0.2
Amortization of investment tax credit, net deferred taxes	(0.4	)	(0.5	)	(0.3	)	(0.1	)	(0.7	)
Plant basis differences	(1.6	)	—		(0.4	)	(13.2	)	5.1
Production tax credits and other credits	(0.8	)	(1.1	)	—		—		—
Noncontrolling interest	(2.0	)	(2.9	)	—		—		—
Other	(1.2	)	(0.4	)	0.2		0.3		(1.3	)
Effective income tax rate	33.2	%	34.9	%	39.3	%	21.5	%	42.4	%

For the Six Months Ended June 30, 2014	Exelon		Generation		ComEd		PECO		BGE
U.S. Federal statutory rate	35.0	%	35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
State income taxes, net of Federal income tax benefit	(0.6	)	(14.7	)	5.0		0.4		5.0
Qualified nuclear decommissioning trust fund income	5.9		27.7		—		—		—
Domestic production activities deduction	(3.2	)	(14.8	)	—		—		—
Health care reform legislation	0.1		—		0.2		—		0.2
Amortization of investment tax credit, net deferred taxes	(1.2	)	(4.9	)	(0.3	)	(0.1	)	(0.3	)
Plant basis differences	(3.0	)	—		(0.5	)	(10.8	)	0.4
Production tax credits and other credits	(2.4	)	(11.1	)	—		—		—
Noncontrolling interest	(1.9	)	(8.8	)	—		—		—
Other	(3.1	)	(8.9	)	0.2		0.3		0.1
Effective income tax rate	25.6	%	(0.5	)%	39.6	%	24.8	%	40.4	%