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Accounts Receivable
12 Months Ended
Dec. 31, 2024
Receivables [Abstract]  
Accounts Receivable
Note 7—Accounts Receivable
The following table presents details of our accounts receivable balances:

As of December 31,
2024
2023
(Dollars in millions)
Trade and purchased receivables$295 287 
Earned and unbilled (credits) receivables
(67)(15)
Other28 23 
Total accounts receivable256 295 
Less: allowance for credit losses(29)(34)
Accounts receivable, less allowance$227 261 

We are exposed to concentrations of credit risk from our customers. We generally do not require collateral to secure our receivable balances. We have agreements with other telecommunications service providers whereby we agree to bill and collect on their behalf for services rendered by those providers to our customers within our local service area. We purchase accounts receivable from other telecommunications service providers primarily on a recourse basis and include these amounts in our accounts receivable balance. We have not experienced any significant loss associated with these purchased receivables.