Employee Benefit Plans (Tables)

6 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Schedule of Components of Pension and Other Postretirement Benefit Costs for Continuing Operation

The following table details the components of pension and other postretirement benefit costs for continuing operations.

	Pension benefits						Other postretirement benefits
(In millions)	2022			2021			2022		2021
Three months ended March 31
Service cost	$	1		$	1		$	—	$	—
Interest cost		1			2			1		—
Expected return on plan assets		(2	)		(2	)		—		—
Actuarial (gain)		(1	)		—			—		—
Total net periodic benefit costs	$	(1	)	$	1		$	1	$	—
Six months ended March 31
Service cost	$	2		$	3		$	—	$	—
Interest cost		3			3			1		1
Expected return on plan assets		(4	)		(4	)		—		—
Actuarial (gain)		(1	)		—			—		—
Total net periodic benefit costs	$	—		$	2		$	1	$	1