Income Taxes (Tables)

9 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

Effective Income Tax Rate Reconciliation

For the Three Months Ended September 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	2.7		2.1		5.0		1.2		5.3
Qualified nuclear decommissioning trust fund income	(5.4	)	(12.5	)	—		—		—
Domestic production activities deduction	(4.9	)	(11.6	)	—		—		—
Health care reform legislation	—		—		—		—		0.2
Amortization of investment tax credit, net deferred taxes	(2.3	)	(5.2	)	(0.3	)	(0.1	)	(0.2	)
Plant basis differences	(1.4	)	—		(0.1	)	(7.0	)	(0.6	)
Production tax credits and other credits	(3.8	)	(9.0	)	—		—		—
Noncontrolling interest	1.7		3.9		—		—		—
Statute of limitations expiration	(6.4	)	(15.2	)	—		—		—
Other	1.2		0.4		0.3		—		(0.4	)
Effective income tax rate	16.4	%	(12.1	)%	39.9	%	29.1	%	39.3	%

For the Nine Months Ended September 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	3.1		2.8		5.2		1.2		5.3
Qualified nuclear decommissioning trust fund income	(0.9	)	(1.6	)	—		—		—
Domestic production activities deduction	(2.8	)	(4.9	)	—		—		—
Health care reform legislation	—		—		—		—		0.2
Amortization of investment tax credit, net deferred taxes	(1.2	)	(1.9	)	(0.3	)	(0.1	)	(0.1	)
Plant basis differences	(1.2	)	—		(0.1	)	(7.3	)	(0.4	)
Production tax credits and other credits	(2.2	)	(3.8	)	—		—		—
Noncontrolling interest	—		0.1		—		—		—
Statute of limitations expiration	(1.6	)	(2.9	)	—		—		—
Other	0.9		0.6		0.2		0.2		(0.1	)
Effective income tax rate	29.1	%	23.4	%	40.0	%	29.0	%	39.9	%

For the Three Months Ended September 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	3.4		3.7		5.0		0.1		4.6
Qualified nuclear decommissioning trust fund income	(0.3	)	(0.4	)	—		—		—
Domestic production activities deduction	(2.4	)	(3.2	)	—		—		—
Health care reform legislation	—		—		0.2		—		0.2
Amortization of investment tax credit, net deferred taxes	(1.0	)	(1.2	)	(0.3	)	(0.1	)	(0.3	)
Plant basis differences	(0.8	)	—		—		(11.3	)	0.5
Production tax credits and other credits	(1.9	)	(2.4	)	—		—		—
Noncontrolling interest	(1.2	)	(1.6	)	—		—		—
Statute of limitations expiration	(3.8	)	(5.0	)	—		—		—
Other	1.2		0.6		0.1		(0.1	)	(1.2	)
Effective income tax rate	28.2	%	25.5	%	40.0	%	23.6	%	38.8	%

For the Nine Months Ended September 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	2.0		1.2		5.0		0.3		4.9
Qualified nuclear decommissioning trust fund income	2.0		3.6		—		—		—
Domestic production activities deduction	(2.7	)	(4.8	)	—		—		—
Health care reform legislation	0.1		—		0.2		—		0.2
Amortization of investment tax credit, net deferred taxes	(1.1	)	(1.7	)	(0.3	)	(0.1	)	(0.3	)
Plant basis differences	(1.6	)	—		(0.3	)	(11.0	)	0.5
Production tax credits and other credits	(2.1	)	(3.7	)	—		—		—
Noncontrolling interest	(1.4	)	(2.6	)	—		—		—
Statute of limitations expiration	(2.5	)	(4.4	)	—		—		—
Other	(0.5	)	(0.7	)	0.1		0.1		(0.5	)
Effective income tax rate	27.2	%	21.9	%	39.7	%	24.3	%	39.8	%