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EARNINGS PER COMMON SHARE
 3 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
EARNINGS PER COMMON SHARE EARNINGS PER COMMON SHARE
The following table sets forth basic and diluted net income per common share computational data (shares in thousands, except per share data):
Three Months Ended March 31,
20252024
Net income from continuing operations attributable to American Tower common stockholders$488.7 $825.7 
Net income from discontinued operations attributable to American Tower common stockholders— 91.7 
Net income attributable to American Tower Corporation common stockholders$488.7 $917.4 
Basic weighted average common shares outstanding467,640 466,519 
Dilutive securities879 1,141 
Diluted weighted average common shares outstanding468,519 467,660 
Basic net income from continuing operations attributable to American Tower Corporation common stockholders$1.05 $1.77 
Basic net income from discontinued operations attributable to American Tower Corporation common stockholders— 0.20 
Basic net income attributable to American Tower Corporation common stockholders per common share$1.05 $1.97 
Diluted net income from continuing operations attributable to American Tower Corporation common stockholders$1.04 $1.77 
Diluted net income from discontinued operations attributable to American Tower Corporation common stockholders— 0.20 
Diluted net income attributable to American Tower Corporation common stockholders$1.04 $1.96 
Shares Excluded From Dilutive Effect—The following shares were not included in the computation of diluted earnings per share because the effect would be anti-dilutive (in thousands, on a weighted average basis)
Three Months Ended March 31,
 20252024
Restricted stock units121 126