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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 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
March 31,
20212020
(Dollars and shares in millions, except per share amounts)
Net income attributable to UScellular shareholders$60 $71 
Weighted average number of shares used in basic earnings per share86 86 
Effects of dilutive securities2 
Weighted average number of shares used in diluted earnings per share88 88 
Basic earnings per share attributable to UScellular shareholders$0.70 $0.82 
Diluted earnings per share attributable to UScellular shareholders$0.69 $0.81