Benefit Obligations (Tables)

6 Months Ended

Mar. 31, 2020

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The components of the pension and post-retirement net periodic benefit (credit) cost for the periods indicated are provided in the table below:

	Three months ended March 31,				Six months ended March 31,
(In millions)	2020		2019		2020		2019
Pension Benefits - U.S.
Components of net periodic benefit credit
Service cost	$	1	$	1	$	2	$	2
Interest cost	8		9		15		19
Expected return on plan assets	(15)		(15)		(28)		(30)
Net periodic benefit credit	$	(6)	$	(5)	$	(11)	$	(9)
Pension Benefits - Non-U.S.
Components of net periodic benefit cost
Service cost	$	2	$	1	$	4	$	3
Interest cost	1		3		2		5
Net periodic benefit cost	$	3	$	4	$	6	$	8
Post-retirement Benefits - U.S.
Components of net periodic benefit cost
Service cost	$	—	$	1	$	—	$	1
Interest cost	3		4		6		7
Expected return on plan assets	(2)		(3)		(5)		(5)
Amortization of prior service cost	(1)		—		(1)		—
Net periodic benefit cost	$	—	$	2	$	—	$	3