Earnings Per Share (Tables)

12 Months Ended

Sep. 30, 2022

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):

	Year Ended September 30,
	2022		2021		2020
Income Available to Ordinary Shareholders
Income from continuing operations	$	1,532	$	1,513	$	631
Income from discontinued operations	—		124		—
Basic and diluted income available to shareholders	$	1,532	$	1,637	$	631
Weighted Average Shares Outstanding
Basic weighted average shares outstanding	696.1		716.6		751.0
Effect of dilutive securities:
Stock options, unvested restricted stock and unvested    performance share awards	3.5		4.5		2.6
Diluted weighted average shares outstanding	699.6		721.1		753.6
Antidilutive Securities
Stock options and unvested restricted stock	0.4		—		1.4