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EARNINGS PER SHARE
 6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
EARNINGS PER SHARE EARNINGS PER SHARE The computation of basic and diluted earnings per share for Net income attributable to Wabtec shareholders is as follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
In millions, except per share data2023202220232022
Numerator
Net income attributable to Wabtec shareholders$191 $166 $360 $315 
Denominator
Weighted average shares outstanding - basic178.9 181.9 179.4 183.2 
Effect of dilutive securities:
Assumed conversion of dilutive stock-based compensation plans0.5 0.5 0.6 0.5 
Weighted average shares outstanding - diluted179.4 182.4 180.0 183.7 
Net income attributable to Wabtec shareholders per common share
Basic$1.06 $0.91 $2.00 $1.71 
Diluted$1.06 $0.91 $2.00 $1.71