Assets and Liabilities Held for Sale - Disposal Groups, Including Discontinued Operations (Details) - USD ($) $ in Millions	Dec. 31, 2022	Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets held for sale	$ 418	$ 387
Noncurrent assets held for sale	588	751
Current liabilities held for sale	310	236
Noncurrent liabilities held for sale	62	62
Global Retail | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable - net	220	199
Inventories	157	155
Other current assets	28	21
Current assets held for sale	405	375
Property, plant and equipment - net	191	89
Goodwill	0	22
Other intangible assets - net	322	514
Other noncurrent assets	72	72
Noncurrent assets held for sale	585	697
Accounts payable	129	127
Accrued compensation and benefits	16	25
Deferred revenue	38	36
Other current liabilities	116	33
Current liabilities held for sale	299	221
Other noncurrent liabilities	61	61
Noncurrent liabilities held for sale	$ 61	$ 61