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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Earnings per share
The amounts used in computing basic and diluted earnings per share attributable to UScellular shareholders were as follows:
Three Months Ended
September 30,
Nine Months Ended
September 30,
2021202020212020
(Dollars and shares in millions, except per share amounts)
Net income attributable to UScellular shareholders$34 $85 $128 $224 
Weighted average number of shares used in basic earnings per share86 86 87 86 
Effects of dilutive securities1 1 
Weighted average number of shares used in diluted earnings per share87 88 88 87 
Basic earnings per share attributable to UScellular shareholders$0.39 $0.98 $1.48 $2.60 
Diluted earnings per share attributable to UScellular shareholders$0.38 $0.97 $1.46 $2.56