Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2011

Accumulated Other Comprehensive Loss [Abstract]

Accumulated Other Comprehensive Loss

(18) ACCUMULATED OTHER COMPREHENSIVE LOSS

A detail of the components of Pepco Holdings' AOCL relating to continuing operations is as follows. For additional information, see the consolidated statements of comprehensive income.

	Commodity Derivatives			Treasury Lock			Other			Accumulated Other Comprehensive Loss
	(millions of dollars)
Balance, December 31, 2008	$	(120	)	$	(25	)	$	(10	)	$	(155	)
Current year change		21			3			(7	)		17
Balance, December 31, 2009		(99	)		(22	)		(17	)		(138	)
Current year change		21			11			—			32
Balance, December 31, 2010		(78	)		(11	)		(17	)		(106	)
Current year change		49			1			(7	)		43
Balance, December 31, 2011	$	(29	)	$	(10	)	$	(24	)	$	(63	)

A detail of the income tax expense (benefit) allocated to the components of Pepco Holdings' AOCL relating to continuing operations for each year is as follows.

For the Year Ended:	Commodity Derivatives		Treasury Lock			Other			Accumulated Other Comprehensive Loss
	(millions of dollars)
December 31, 2009	$	15		$	2	$	(5	)	$	12
December 31, 2010	$	14		$	7	$	—		$	21
December 31, 2011	$	32		$	—	$	(4	)	$	28