v3.24.3
Sales of Certain Receivables - Schedule of Factoring Arrangement (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]          
Other current assets $ 2,154   $ 2,154   $ 2,352
Other long-term assets 5,158   5,158   4,229
Other current liabilities 1,903   1,903   1,296
Of which:          
Losses from sales of receivables 23 $ 46 69 $ 135  
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 2,284   2,284   2,388
Other current assets 529   529   557
Other long-term assets 99   99   103
Other current liabilities 421   421   373
Net cash proceeds since inception     1,495   1,583
Of which:          
Change in net cash proceeds during the year-to-date period     (88)   (114)
Net cash proceeds funded by reinvested collections     1,583   1,697
Service receivables and EIP receivables 626   626   658
Losses from sales of receivables 23 $ 46 69 $ 135  
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 527   527   555
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 $ 99   $ 99   $ 103