v3.24.4
Sales of Certain Receivables - Schedule of Factoring Arrangement (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Nov. 01, 2024
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Other current assets $ 1,853 $ 2,352    
Other assets 4,325 4,229    
Other current liabilities 1,965 1,296    
Other long-term liabilities 4,000 3,929    
Of which:        
Losses from sales of receivables 62 165 $ 214  
Variable Interest Entity, Primary Beneficiary | Service Receivable Sale Arrangement        
Of which:        
Gross receivables       $ 193
Variable Interest Entity, Primary Beneficiary | Service Receivable Sale Arrangement | Collateral Pledged        
Of which:        
Gross receivables 286      
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 1,616 2,388    
Other current assets 1 557    
Other assets 0 103    
Other current liabilities 409 373    
Other long-term liabilities 32 0    
Net cash proceeds since inception 1,468 1,583    
Of which:        
Change in net cash proceeds during the year-to-date period (115) (114)    
Net cash proceeds funded by reinvested collections 1,583 1,697    
Losses from sales of receivables 62 165 $ 214  
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Level 3 | Carrying Amount        
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Carrying amounts of deferred purchase price assets 148 658    
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | EIP Sale Arrangement        
Of which:        
Gross EIP receivables       $ 604
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | EIP Sale Arrangement | Collateral Pledged        
Of which:        
Gross EIP receivables 505      
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 0 555    
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 0 103    
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Other current liabilities - of which, deferred purchase price        
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Carrying amounts of deferred purchase price assets 116 0    
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Other long-term liabilities - of which, deferred purchase price        
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]        
Carrying amounts of deferred purchase price assets $ 32 $ 0