v3.25.1
Receivables and Related Allowance for Credit Losses - Schedule of Equipment Installment Plan Receivables by Credit Category (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount $ 6,695 $ 6,878
Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 1,320  
Originated in 2024 3,342  
Originated prior to 2024 611  
EIP receivables, net of unamortized imputed discount 5,273  
Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 369  
Originated in 2024 908  
Originated prior to 2024 145  
EIP receivables, net of unamortized imputed discount 1,422  
Current - 30 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 6,571  
Current - 30 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 1,314  
Originated in 2024 3,307  
Originated prior to 2024 602  
EIP receivables, net of unamortized imputed discount 5,223  
Current - 30 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 363  
Originated in 2024 849  
Originated prior to 2024 136  
EIP receivables, net of unamortized imputed discount 1,348  
31 - 60 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 52  
31 - 60 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 5  
Originated in 2024 15  
Originated prior to 2024 3  
EIP receivables, net of unamortized imputed discount 23  
31 - 60 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 5  
Originated in 2024 21  
Originated prior to 2024 3  
EIP receivables, net of unamortized imputed discount 29  
61 - 90 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 36  
61 - 90 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 1  
Originated in 2024 10  
Originated prior to 2024 3  
EIP receivables, net of unamortized imputed discount 14  
61 - 90 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 1  
Originated in 2024 19  
Originated prior to 2024 2  
EIP receivables, net of unamortized imputed discount 22  
More than 90 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 36  
More than 90 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 0  
Originated in 2024 10  
Originated prior to 2024 3  
EIP receivables, net of unamortized imputed discount 13  
More than 90 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2025 0  
Originated in 2024 19  
Originated prior to 2024 4  
EIP receivables, net of unamortized imputed discount $ 23