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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Earnings per share
The amounts used in computing basic and diluted earnings per share attributable to TDS common shareholders were as follows:
Year Ended December 31,202120202019
(Dollars and shares in millions, except per share amounts)   
Net income attributable to TDS common shareholders used in basic earnings per share$117 $226 $121 
Adjustments to compute diluted earnings:
Noncontrolling interest adjustment(1)(3)(1)
Net income attributable to TDS common shareholders used in diluted earnings per share$116 $223 $120 
Weighted average number of shares used in basic earnings per share:
Common Shares108 107 107 
Series A Common Shares7 
Total115 114 114 
Effects of dilutive securities1 
Weighted average number of shares used in diluted earnings per share116 115 116 
Basic earnings per share attributable to TDS common shareholders$1.03 $1.97 $1.06 
Diluted earnings per share attributable to TDS common shareholders$1.00 $1.93 $1.03