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Stock-Based Compensation - UScellular, Deferred Stock Units (Details) - Common Shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Deferred Compensation Stock Units | UScellular Long-Term Incentive Plans      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percent of match from annual bonus 33.00% 33.00%  
Percent of match up to 50% from annual bonus     25.00%
Percent of match above 50% from annual bonus     33.00%
Award vesting period 3 years