Share-based Payments (Tables)

6 Months Ended

Mar. 31, 2022

Share-based Payments

Schedule of stock option activity

	2022			2021
	Shares of stock	Weighted average		Shares of stock	Weighted average
	under options	exercise price		under options	exercise price
	(in millions)			(in millions)
Outstanding at September 30	0.3	$	38.72	0.4	$	36.41
Options granted	—		—	—		—
Options exercised	—		—	(0.1)		31.62
Options forfeited or expired	—		—	—		—
Outstanding at March 31	0.3		38.72	0.3		38.72
Vested and expected to vest in the future as of March 31	0.2	$	38.72	0.2	$	38.72