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Income Taxes - Reconciliation of Uncertain Tax Benefits (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Uncertain tax benefits      
Uncertain tax benefits $ 57 $ 73 $ 22
Liability for uncertainty in income taxes, noncurrent 62 76  
Unrecognized tax benefits, income tax penalties expense 2 1 1
Accrued interest and penalties related to unrecognized tax benefits 5 3  
Uncertain tax benefits reconciliation      
Balance as of January 1 73 22  
Increase due to current year positions 12 28  
Increase due to acquired balance from Vivint Smart Home 0 23  
Settlements, payments and statute closure (28) 0  
Uncertain tax benefits as of December 31 $ 57 $ 73 $ 22