Capitalization (Tables)

12 Months Ended

Dec. 31, 2011

Capitalization [Abstract]

Schedule Of Long-Term Debt Maturities

(millions of dollars)	Con Edison		CECONY
2012	$	530	$	525
2013		705		700
2014		481		475
2015		495		350
2016		731		650

Fair Values Of Long-Term Debt

	December 31,
(millions of dollars)	2011				2010
Long-Term Debt (including current portion)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Con Edison	$	10,673	$	12,744	$	10,676	$	11,761
CECONY	$	9,745	$	11,593	$	9,743	$	10,680