v3.25.1
Equipment Installment Plans - Allowance for Credit Losses (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Allowance for credit losses    
Allowance for credit losses, beginning of period $ 82  
Allowance for credit losses, end of period 78  
Equipment Installment Plan Receivable    
Allowance for credit losses    
Write-offs, net of recoveries, originated in 2022 1  
Write-offs, net of recoveries, originated in 2023 5  
Write-offs, net of recoveries, originated in 2024 13  
Write-offs, net of recoveries, originated in 2025 0  
Write-offs, net of recoveries, Total 19 $ 24
Allowance for credit losses, beginning of period 82 90
Bad debts expense 15 22
Write-offs, net of recoveries (19) (24)
Allowance for credit losses, end of period $ 78 $ 88