Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Finite-Lived Intangible Assets [Line Items]

Schedule Of Goodwill

The following table presents the gross amount, accumulated impairment loss, and carrying amount of goodwill at Exelon, ComEd, and PHI as of December 31, 2020 and 2019. There were no additions or impairments during the years ended December 31, 2020 and 2019.

	Gross Amount		Accumulated Impairment Loss		Carrying Amount
Exelon	$	8,660	$	1,983	$	6,677
ComEd(a)	4,608		1,983		2,625
PHI(b)	4,005		—		4,005

__________

(a)Reflects goodwill recorded in 2000 from the PECO/Unicom merger (predecessor parent company of ComEd).

(b)Reflects goodwill recorded in 2016 from the PHI merger.

Schedule of Finite-Lived Intangible Assets

Exelon’s, Generation’s, ComEd’s, and PHI's other intangible assets and liabilities, included in Unamortized energy contract assets and liabilities and Other deferred debits and other assets in their Consolidated Balance Sheets, consisted of the following as of December 31, 2020 and 2019. The intangible assets and liabilities shown below are amortized on a straight line basis, except for unamortized energy contracts which are amortized in relation to the expected realization of the underlying cash flows:

	December 31, 2020						December 31, 2019
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Generation
Unamortized Energy Contracts	$	1,963	$	(1,642)	$	321	$	1,967	$	(1,612)	$	355
Customer Relationships	326		(215)		111		343		(190)		153
Trade Name	222		(197)		25		243		(193)		50
ComEd
Chicago Settlement Agreements	162		(162)		—		162		(155)		7
PHI
Unamortized Energy Contracts	(1,515)		1,188		(327)		(1,515)		1,073		(442)
Exelon Corporate
Software License	95		(53)		42		95		(44)		51
Exelon	$	1,253	$	(1,081)	$	172	$	1,295	$	(1,121)	$	174

Schedule Of Finite-Lived Intangible Assets Amortization Expense

The following table summarizes the amortization expense related to intangible assets and liabilities for each of the years ended December 31, 2020, 2019, and 2018:

For the Years Ended December 31,	Exelon(a)(b)		Generation(a)		ComEd		PHI(b)
2020	$	(17)	$	81	$	7	$	(115)
2019	(28)		74		7		(119)
2018	(109)		63		7		(188)

__________

(a)At Exelon and Generation, amortization of unamortized energy contracts totaling $30 million, $21 million, and $14 million for the years ended December 31, 2020, 2019, and 2018, respectively, was recorded in Operating revenues or Purchased power and fuel expense in their Consolidated Statements of Operations and Comprehensive Income.

(b)At Exelon and PHI, amortization of the unamortized energy contract fair value adjustment amounts and the corresponding offsetting regulatory asset and liability amounts are amortized through Purchased power and fuel expense in their Consolidated Statements of Operations and Comprehensive Income.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The following table summarizes the estimated future amortization expense related to intangible assets and liabilities as of December 31, 2020:

For the Years Ending December 31,	Exelon		Generation		PHI
2021	$	(1)	$	81	$	(92)
2022	(22)		57		(89)
2023	(20)		51		(81)
2024	20		48		(38)
2025	40		41		(5)

Schedule of Alternative or Renewable Energy Credits [Table Text Block]

The following table presents the current and noncurrent RECs as of December 31, 2020 and 2019:

	As of December 31, 2020				As of December 31, 2019
	Exelon		Generation		Exelon		Generation
Current REC's	$	632	$	621	$	345	$	336
Noncurrent REC's	—		—		86		86