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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2014
Earnings Per Share  
Reconciliation Of The Numerators And Denominators Of Basic Earnings Per Share And Diluted Earnings Per Share
 Three months ended
 March 31,
 2014 2013
Numerators     
Numerator for basic earnings per share:     
Net income$3,734 $3,773
Less: Net income attributable to noncontrolling interest (82)  (73)
Net income attributable to AT&T 3,652  3,700
Dilutive potential common shares:     
Share-based payment 4  4
Numerator for diluted earnings per share$3,656 $3,704
Denominators (000,000)     
Denominator for basic earnings per share:     
Weighted-average number of common shares outstanding 5,222  5,513
Dilutive potential common shares:     
Share-based payment (in shares) 16  17
Denominator for diluted earnings per share 5,238  5,530
Basic earnings per share attributable to AT&T$0.70 $0.67
Diluted earnings per share attributable to AT&T$0.70 $0.67