Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2014

Equity [Abstract]

Schedule of Components of Other Comprehensive Loss

The components of Pepco Holdings’ AOCL relating to continuing and discontinued operations are as follows.

For additional information, see the consolidated statements of comprehensive income.

	Three Months  Ended September 30,						Nine Months  Ended September 30,
	2014			2013			2014			2013
	(millions of dollars)
Balance at beginning of period	$	(35	)	$	(41	)	$	(34	)	$	(48	)
Treasury Lock
Balance at beginning of period		(9	)		(9	)		(9	)		(10	)
Amount of pre-tax loss reclassified to Interest expense		—			—			—			1
Income tax benefit		—			—			—			—
Balance at end of period		(9	)		(9	)		(9	)		(9	)
Pension and Other Postretirement Benefits
Balance at beginning of period		(26	)		(32	)		(25	)		(32	)
Amount of amortization of net prior service cost and actuarial loss reclassified to Other operation and maintenance expense		2			1			—			2
Income tax benefit (expense)		—			—			1			(1	)
Balance at end of period		(24	)		(31	)		(24	)		(31	)
Commodity Derivatives
Balance at beginning of period		—			—			—			(6	)
Amount of net pre-tax loss reclassified to loss from discontinued operations before income tax		—			—			—			10
Income tax expense		—			—			—			(4	)
Balance at end of period		—			—			—			—
Balance as of September 30	$	(33	)	$	(40	)	$	(33	)	$	(40	)