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Earnings Per Share (Tables)
3 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Earnings Per Share
The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions):
Three Months Ended
December 31,
 20242023
Income Available to Ordinary Shareholders
Income from continuing operations$363 $340 
Income from discontinued operations56 34 
Basic and diluted income available to shareholders$419 $374 
Weighted Average Shares Outstanding
Basic weighted average shares outstanding662.0 680.7 
Effect of dilutive securities:
Stock options, unvested restricted stock and
     unvested performance share awards
3.0 1.7 
Diluted weighted average shares outstanding665.0 682.4 
Antidilutive Securities
Stock options and unvested restricted stock— 0.6