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Income Taxes - Reconciliation of Uncertain Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Uncertain tax benefits    
Uncertain tax benefits $ 73 $ 22
Liability for uncertainty in income taxes, noncurrent 76 24
Unrecognized tax benefits, income tax penalties expense 1 1
Accrued interest and penalties related to unrecognized tax benefits 3 2
Uncertain tax benefits reconciliation    
Balance as of January 1 22 13
Increase due to current year positions 28 9
Increase due to acquired balance from Vivint Smart Home 23 0
Uncertain tax benefits as of December 31 $ 73 $ 22