Earnings Per Share (Tables)

3 Months Ended

Dec. 31, 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):

	Three Months Ended December 31,
	2022		2021
Income Available to Ordinary Shareholders
Basic and diluted income available to    shareholders	$	118	$	381
Weighted Average Shares Outstanding
Basic weighted average shares outstanding	687.0		704.3
Effect of dilutive securities:
Stock options, unvested restricted stock and      unvested performance share awards	3.3		5.2
Diluted weighted average shares outstanding	690.3		709.5
Antidilutive Securities
Stock options and unvested restricted stock	0.3		—