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Basis of Presentation - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Basis of Presentation [Line Items]    
Software license costs incurred but not yet paid $ 135 $ 15
TDS | UScellular    
Basis of Presentation [Line Items]    
Ownership percentage 83.00%