Other Material Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Summary of Total Guarantees

A summary, by type and term, of Con Edison’s total guarantees at March 31, 2018 is as follows:

Guarantee Type	0 – 3 years	4 – 10 years	> 10 years		Total
	(Millions of Dollars)
Con Edison Transmission	$742	$404		$—	$1,146
Energy transactions	426	25	212		663
Renewable electric production projects	172	—	24		196
Other	123	—	—		123
Total	$1,463	$429	$236		$2,128