Discontinued Operations - Assets and Liabilities of Discontinued Operations (Details) - USD ($) $ in Millions	Jun. 30, 2022	Sep. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets of discontinued operations	$ 0	$ 293
Noncurrent Assets of Discontinued Operations	0	423
Current liabilities of discontinued operations	0	157
Noncurrent Liabilities of Discontinued Operations	$ 0	17
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net		147
Disposal Group, Including Discontinued Operation, Inventory, Current		123
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets		23
Current assets of discontinued operations		293
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment		390
Disposal Group, Including Discontinued Operation, Goodwill		27
Disposal Group, Including Discontinued Operation, Other Assets		6
Noncurrent Assets of Discontinued Operations		423
Disposal Group, Including Discontinued Operation, Accounts Payable		54
Disposal Group, Including Discontinued Operation, Accrued Liabilities		75
Disposal Group, Including Discontinued Operation, Employee-related Liabilities, Current		28
Current liabilities of discontinued operations		157
Disposal Group, Including Discontinued Operation, Other Liabilities		16
Noncurrent Liabilities of Discontinued Operations		$ 17