v3.23.2
Earnings Per Share - Reconciliation (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Earnings Per Share [Abstract]        
Net income attributable to UScellular shareholders $ 5 $ 21 $ 18 $ 71
Weighted average number of shares used in basic earnings (loss) per share (in shares) 85 86 85 86
Effects of dilutive securities (in shares) 1 1 1 1
Weighted average number of shares used in diluted earnings per share 86 87 86 87
Basic earnings per share attributable to UScellular shareholders $ 0.05 $ 0.25 $ 0.21 $ 0.82
Diluted earnings per share attributable to UScellular shareholders $ 0.05 $ 0.25 $ 0.20 $ 0.82