Employee Benefit Plans (Tables)

9 Months Ended

Jun. 30, 2021

Compensation And Retirement Disclosure [Abstract]

Net Periodic Defined Benefit Pension Costs

Net periodic defined benefit pension costs include the following:

	Three Months Ended June 30
	2021					2020
	Pension Benefits
	U.S.		Foreign			U.S.			Foreign
	(In millions)
Service cost	$	—	$	1		$	—		$	1
Interest cost		—		—			1			1
Expected return on plan assets		—		(2	)		(1	)		(2	)
Amortization of prior service cost		—		2			—			—
Amortization of actuarial loss		—		1			—			1
Settlement charge		—		1			—			—
Net periodic benefit (credit) cost	$	—	$	3		$	—		$	1

	Nine Months Ended June 30
	2021					2020
	Pension Benefits
	U.S.		Foreign			U.S.			Foreign
	(In millions)
Service cost	$	—	$	4		$	1		$	4
Interest cost		—		2			3			3
Expected return on plan assets		—		(7	)		(3	)		(7	)
Amortization of prior service cost		—		2			—			—
Amortization of actuarial loss		—		2			—			2
Settlement charge		6		1			—			—
Net periodic benefit (credit) cost	$	6	$	4		$	1		$	2