v3.25.2
Sales of Certain Receivables - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Variable Interest Entity [Line Items]          
Losses from sales of receivables $ 19 $ 25 $ 41 $ 46  
Variable Interest Entity, Primary Beneficiary | Collateral Pledged | Service Receivable Sale Arrangement          
Variable Interest Entity [Line Items]          
Gross receivables 231   231   $ 286
EIP Securitization Arrangement          
Variable Interest Entity [Line Items]          
Revolving receivables facility, maximum borrowing capacity 1,300   1,300   1,300
Factoring Arrangement | Variable Interest Entity, Not Primary Beneficiary          
Variable Interest Entity [Line Items]          
Revolving receivables facility, outstanding borrowings 775   775   775
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary          
Variable Interest Entity [Line Items]          
Losses from sales of receivables 19 $ 25 41 $ 46  
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Collateral Pledged | EIP Sale Arrangement          
Variable Interest Entity [Line Items]          
Gross EIP receivables 508   508   505
Factoring and EIP Securitization Arrangement | Level 3 | Carrying Amount | Variable Interest Entity, Primary Beneficiary          
Variable Interest Entity [Line Items]          
Carrying amounts of deferred purchase price assets $ 138   $ 138   $ 148