Leasing Arrangements - Components of Lease Cost Recognized (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lease cost:
Total lease cost	$ 11	$ 10	$ 30	$ 28
Selling General and Administrative Expenses {Member]
Lease cost:
Operating lease cost	5	3	12	10
Variable lease cost	1	1	3	2
Cost of Sales [Member]
Lease cost:
Operating lease cost	3	4	10	11
Variable lease cost	1	1	3	2
Short-term leases	$ 1	$ 1	$ 2	$ 3