Capitalization (Tables)

3 Months Ended

Mar. 31, 2013

Regulated Operations [Abstract]

Carrying Amounts and Fair Values of Long-Term Debt

The carrying amounts and fair values of long-term debt are:

(Millions of Dollars)	March 31, 2013				December 31, 2012
Long-Term Debt (including current portion)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Con Edison		$10,959		$12,963		$10,768		$12,935
CECONY		$10,040		$11,792		$  9,845		$11,751