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Earnings Per Common Share Attributable to Pfizer Inc. Common Shareholders
 12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Earnings Per Common Share Attributable to Pfizer Inc. Common Shareholders Earnings Per Common Share Attributable to Pfizer Inc. Common Shareholders
The following presents the detailed calculation of EPS:
 Year Ended December 31,
(IN MILLIONS)202320222021
EPS Numerator
  
Income from continuing operations attributable to Pfizer Inc. common shareholders$2,134 $31,366 $22,414 
Discontinued operations––net of tax(15)6 (434)
Net income attributable to Pfizer Inc. common shareholders$2,119 $31,372 $21,979 
EPS Denominator  
Weighted-average number of common shares outstanding––Basic5,643 5,608 5,601 
Common-share equivalents66 125 107 
Weighted-average number of common shares outstanding––Diluted5,709 5,733 5,708 
Anti-dilutive common stock equivalents(a)
9 1 2 
(a)These common stock equivalents were outstanding for the periods presented, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect.