v3.26.3
EARNINGS PER COMMON SHARE (Tables)
 9 Months Ended
Sep. 30, 2026
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Earnings Per 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 September 30,Nine Months Ended September 30,
2026202520262025
Net income attributable to American Tower Corporation common stockholders$765.8 $853.3 $2,492.8 $1,708.8 
Basic weighted average common shares outstanding465,323 468,287 465,817 468,036 
Dilutive securities435 752 510 820 
Diluted weighted average common shares outstanding465,758 469,039 466,327 468,856 
Basic net income attributable to American Tower Corporation common stockholders per common share$1.65 $1.82 $5.35 $3.65 
Diluted net income attributable to American Tower Corporation common stockholders$1.64 $1.82 $5.35 $3.64 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share 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 September 30,Nine Months Ended September 30,
2026202520262025
Restricted stock units6 — 3 1