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Divestitures (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
asset_group
Dec. 31, 2023
USD ($)
Business divestiture agreement amount $ 4,400  
Licenses 4,579 $ 4,693
Expenses related to strategic alternatives review $ 35 $ 8
Asset groups | asset_group 2  
Contingent consideration    
Business divestiture agreement amount $ 100  
Noncontrolling interests    
Business divestiture agreement amount 400  
Put/Call Agreement    
Business divestiture agreement amount 106  
Put/call amount, fair value 5  
Verizon Purchase Agreement    
License sale agreement amount 1,000  
Licenses 586  
AT&T Purchase Agreement    
License sale agreement amount 1,018  
Licenses 859  
AT&T Purchase Agreement | Noncontrolling interests    
Business divestiture agreement amount 232  
Maximum    
Amount of debt assumed under a business divestiture agreement $ 2,000