Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

Change in Contract with Customer, Asset and Liability

The following table provides a rollforward of the contract liabilities reflected in Exelon's, PHI's, Pepco's, DPL's, and ACE's Consolidated Balance Sheets for the three and nine months ended September 30, 2023 and 2022. At September 30, 2023 and December 31, 2022, ComEd's, PECO's, and BGE's contract liabilities were immaterial.

	Exelon(a)		PHI(a)		Pepco(a)		DPL		ACE(a)
Balance at December 31, 2022	$	101	$	101	$	81	$	10	$	10
Revenues recognized	(1)		(1)		(1)		—		—
Balance at March 31, 2023	100		100		80		10		10
Revenues recognized	(2)		(2)		(2)		—		—
Balance at June 30, 2023	$	98	$	98	$	78	$	10	$	10
Revenues recognized	(2)		(2)		(1)		—		(1)
Balance as of September 30, 2023	$	96	$	96	$	77	$	10	$	9
	Exelon(a)		PHI(a)		Pepco(a)		DPL(a)		ACE(a)
Balance at December 31, 2021	$	109	$	109	$	87	$	11	$	11
Revenues recognized	(2)		(2)		(2)		—		—
Balance at March 31, 2022	107		107		85		11		11
Revenues recognized	(2)		(2)		(1)		—		(1)
Balance at June 30, 2022	$	105	$	105	$	84	$	11	$	10
Revenues recognized	(2)		(2)		(1)		(1)		—
Balance as of September 30, 2022	$	103	$	103	$	83	$	10	$	10

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(a)Revenues recognized in the three and nine months ended September 30, 2023 and 2022, were included in the contract liabilities at December 31, 2022 and 2021, respectively.

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

The following table shows the amounts of future revenues expected to be recorded in each year for performance obligations that are unsatisfied or partially unsatisfied as of September 30, 2023. This disclosure only includes contracts for which the total consideration is fixed and determinable at contract inception. The average contract term varies by customer type and commodity but ranges from one month to several years.

This disclosure excludes the Utility Registrants' gas and electric tariff sales contracts and transmission revenue contracts as they generally have an original expected duration of one year or less and, therefore, do not contain any future, unsatisfied performance obligations to be included in this disclosure.

Year	Exelon		PHI		Pepco		DPL		ACE
2023	$	2	$	2	$	2	$	—	$	1
2024	6		6		5		—		—
2025	5		5		5		—		—
2026	5		5		5		—		—
2027 and thereafter	78		78		60		10		8
Total	$	96	$	96	$	77	$	10	$	9