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Revenue from Contracts with Customers (Tables)
 6 Months Ended
Jun. 30, 2022
Contract with Customers [Line Items]  
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 June 30, 2022. 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.
20222023202420252026 and thereafterTotal
Exelon$4 $8 $6 $5 $82 $105 
PHI4 8 6 5 82 105 
Pepco3 6 5 5 65 84 
DPL1 1 — — 9 11 
ACE— 1 1 — 8 10 
Contract Liabilities  
Contract with Customers [Line Items]  
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
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 six months ended June 30, 2022 and 2021. As of June 30, 2022 and December 31, 2021, ComEd's, PECO's, and BGE's contract liabilities were immaterial.
Exelon(a)
PHI(a)
Pepco(a)
DPL
ACE(a)
Balance as of December 31, 2021$109 $109 $87 $11 $11 
Revenues recognized(2)(2)(2)— — 
Balance as of March 31, 2022107 107 85 11 11 
Revenues recognized(2)(2)(1)— (1)
Balance as of June 30, 2022$105 $105 $84 $11 $10 
Exelon(a)
PHI(a)
Pepco(a)
DPL(a)
ACE(a)
Balance as of December 31, 2020$118 $118 $94 $12 $12 
Revenues recognized(2)(2)(2)— — 
Balance as of March 31, 2021116 116 92 12 12 
Revenues recognized(3)(3)(1)(1)(1)
Balance as of June 30, 2021$113 $113 $91 $11 $11 
__________
(a)Revenues recognized in the three and six months ended June 30, 2022 and 2021, were included in the contract liabilities at December 31, 2021 and 2020, respectively.