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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Schedule of basic and diluted earnings per share, impact of two-class method
The following table summarizes the impact of the two-class method:
Three months ended
March 31,
(in millions, except per share data)20242023
Basic EPS
Net earnings attributable to AbbVie Inc.$1,369 $239 
Earnings allocated to participating securities10 11 
Earnings available to common shareholders$1,359 $228 
Weighted-average basic shares outstanding1,769 1,770 
Basic earnings per share attributable to AbbVie Inc.$0.77 $0.13 
Diluted EPS
Net earnings attributable to AbbVie Inc.$1,369 $239 
Earnings allocated to participating securities10 11 
Earnings available to common shareholders$1,359 $228 
Weighted-average shares of common stock outstanding1,769 1,770 
Effect of dilutive securities4 6 
Weighted-average diluted shares outstanding1,773 1,776 
Diluted earnings per share attributable to AbbVie Inc.$0.77 $0.13