Environmental Matters (Tables)

12 Months Ended

Dec. 31, 2019

Environmental Remediation Obligations [Abstract]

Accrued Liabilities and Regulatory Assets

The accrued liabilities and regulatory assets related to Superfund Sites at December 31, 2019 and 2018 were as follows:

	Con Edison		CECONY
(Millions of Dollars)	2019	2018	2019	2018
Accrued Liabilities:
Manufactured gas plant sites	$640	$689	$561	$603
Other Superfund Sites	94	90	93	90
Total	$734	$779	$654	$693
Regulatory assets	$732	$810	$647	$716

Environmental Remediation Costs

Environmental remediation costs incurred related to Superfund Sites at December 31, 2019 and 2018 were as follows:

	Con Edison		CECONY
(Millions of Dollars)	2019	2018	2019	2018
Remediation costs incurred	$19	$25	$13	$18

Accrued Liability for Asbestos Suits and Workers' Compensation Proceedings

The accrued liability for asbestos suits and workers’ compensation proceedings (including those related to asbestos exposure) and the amounts deferred as regulatory assets for the Companies at December 31, 2019 and 2018 were as follows:

	Con Edison		CECONY
(Millions of Dollars)	2019	2018	2019	2018
Accrued liability – asbestos suits	$8	$8	$7	$7
Regulatory assets – asbestos suits	$8	$8	$7	$7
Accrued liability – workers’ compensation	$78	$79	$73	$75
Regulatory assets – workers’ compensation	$3	$5	$3	$5