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Divestitures - 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
Licenses $ 4,583   $ 4,583   $ 4,579
Expenses related to strategic alternatives review 12 $ 13 22 $ 21  
Verizon Purchase Agreement          
License sale agreement amount         1,000
Licenses 586   586    
AT&T Purchase Agreement          
License sale agreement amount         1,018
Licenses $ 860   $ 860    
Put/Call Agreement          
Business divestiture agreement amount         $ 106