Income Taxes (Tables)

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

Effective Income Tax Rate Reconciliation

For the Three Months Ended March 31, 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	2.6		2.7		5.0		1.2		5.3
Qualified nuclear decommissioning trust fund income	1.9		3.0		—		—		—
Domestic production activities deduction	(2.2	)	(3.4	)	—		—		—
Health care reform legislation	—		—		—		—		0.2
Amortization of investment tax credit, net deferred taxes	(0.9	)	(1.4	)	(0.3	)	(0.1	)	—
Plant basis differences	(1.3	)	—		(0.3	)	(6.7	)	(0.3	)
Production tax credits and other credits	(1.8	)	(2.8	)	—		—		—
Noncontrolling interest	(0.7	)	(1.1	)	—		—		—
Other	0.4		(0.2	)	0.2		—		0.2
Effective income tax rate	33.0	%	31.8	%	39.6	%	29.4	%	40.4	%

For the Three Months Ended March 31, 2014	Exelon		Generation(a)		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	(57.6	)	9.7		5.5		1.2		5.2
Qualified nuclear decommissioning trust fund income	44.2		(4.6	)	—		—		—
Domestic production activities deduction	(27.8	)	2.9		—		—		—
Health care reform legislation	1.3		—		0.1		—		0.2
Amortization of investment tax credit, net deferred taxes	(18.0	)	1.7		(0.3	)	(0.1	)	(0.2	)
Plant basis differences	(31.4	)	—		(0.6	)	(8.7	)	(0.6	)
Production tax credits and other credits	(36.5	)	3.8		—		—		—
Noncontrolling interest	—		—		—		—		—
Other	(47.7	)	3.3		0.2		0.2		0.1
Effective income tax rate	(138.5	)%	51.8	%	39.9	%	27.6	%	39.7	%