Capitalization (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Carrying Amounts and Fair Values of Long-Term Debt

The carrying amounts and fair values of long-term debt at June 30, 2018 and December 31, 2017 were:

(Millions of Dollars)	2018		2017
Long-Term Debt (including current portion) (a)	Carrying Amount	Fair Value	Carrying Amount	Fair Value
Con Edison	$17,040	$17,944	$16,029	$18,147
CECONY	$14,293	$15,108	$13,265	$15,163

(a) Amounts shown are net of unamortized debt expense and unamortized debt discount of $152 million and $133 million for Con Edison and CECONY, respectively, as of June 30, 2018 and $142 million and $121 million for Con Edison and CECONY, respectively, as of December 31, 2017.