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Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2013
Earnings Per Share  
Earnings per share
             
             
  Three Months Ended June 30, Six Months Ended June 30,
  2013 2012 2013 2012
(Dollars and shares in thousands, except per share amounts)           
Net income attributable to U.S. Cellular shareholders$ 143,391 $ 52,685 $ 148,305 $ 115,177
             
Weighted average number of shares used in basic earnings per share  83,845   84,707   83,842   84,638
Effects of dilutive securities:           
 Stock options  226   163   201   202
 Restricted stock units  590   366   612   408
Weighted average number of shares used in diluted earnings per share  84,661   85,236   84,655   85,248
             
Basic earnings per share attributable to U.S. Cellular shareholders$ 1.71 $ 0.62 $ 1.77 $ 1.36
             
Diluted earnings per share attributable to U.S. Cellular shareholders$ 1.69 $ 0.62 $ 1.75 $ 1.35
Summary of antidilutive shares
     
  Three Months Ended June 30, Six Months Ended June 30,
  2013 2012 2013 2012
(Shares in thousands)       
Stock options 2,437  2,498  2,041  2,005
         
Restricted stock units 208  223  221  242