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Earnings Per Share
 12 Months Ended
Sep. 30, 2024
Earnings Per Share [Abstract]  
EARNINGS PER SHARE EARNINGS PER SHARE
The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions):
 Year Ended September 30,
 202420232022
Income Available to Ordinary Shareholders
Income from continuing operations$1,407 $1,562 $1,279 
Income from discontinued operations298 287 253 
Basic and diluted income available to shareholders$1,705 $1,849 $1,532 
Weighted Average Shares Outstanding
Basic weighted average shares outstanding673.8 684.3 696.1 
Effect of dilutive securities:
Stock options, unvested restricted stock and unvested
   performance share awards		2.2 3.1 3.5 
Diluted weighted average shares outstanding676.0 687.4 699.6 
Antidilutive Securities
Stock options and unvested restricted stock0.3 0.2 0.4