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Earnings Per Share (Tables)
6 Months Ended
Jun. 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
June 30,
Six Months Ended
June 30,
2021202020212020
(Dollars and shares in millions, except per share amounts)
Net income attributable to UScellular shareholders$35 $68 $95 $139 
Weighted average number of shares used in basic earnings per share87 86 87 86 
Effects of dilutive securities1 1 
Weighted average number of shares used in diluted earnings per share88 87 88 87 
Basic earnings per share attributable to UScellular shareholders$0.40 $0.79 $1.10 $1.62 
Diluted earnings per share attributable to UScellular shareholders$0.39 $0.78 $1.08 $1.59