v3.24.0.1
Sales of Certain Receivables - Schedule of Factoring Arrangement (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Other current assets $ 2,352 $ 2,435  
Other long-term assets 4,229 4,127  
Other current liabilities 1,296 1,850  
Of which:      
Losses from sales of receivables 165 214 $ 15
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Derecognized net service accounts receivable and EIP receivables 2,388 2,410  
Other current assets 557 558  
Carrying amounts of deferred purchase price assets 658 692  
Other long-term assets 103 136  
Other current liabilities 373 389  
Net cash proceeds since inception 1,583 1,697  
Of which:      
Change in net cash proceeds during the year-to-date period (114) (57)  
Net cash proceeds funded by reinvested collections 1,697 1,754  
Losses from sales of receivables 165 214 $ 15
Service receivables and EIP receivables 1,000 1,000  
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Other current assets - of which, deferred purchase price      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Carrying amounts of deferred purchase price assets 555 556  
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Other long-term assets - of which, deferred purchase price      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Carrying amounts of deferred purchase price assets $ 103 $ 136