Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of the derivative fair value

The following tables provide a summary of the derivative fair value balances recorded by Exelon and ComEd as of December 31, 2021 and 2020:

December 31, 2021
Mark-to-market derivative liabilities (current liabilities)	$	(18)
Mark-to-market derivative liabilities (noncurrent liabilities)	(201)
Total mark-to-market derivative liabilities	$	(219)
December 31, 2020
Mark-to-market derivative liabilities (current liabilities)	$	(33)
Mark-to-market derivative liabilities (noncurrent liabilities)	(268)
Total mark-to-market derivative liabilities	$	(301)