Discontinued Operations - Carrying Amounts of Major Assets and Liabilities, Classified as Held-For-Sale (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Assets
Receivables	$ 0	$ 815
Inventories	0	530
Other current assets	0	53
Property, plant & equipment, net	0	1,263
Goodwill	0	718
Other noncurrent assets	0	277
Total assets held-for-sale	0	3,656
Liabilities
Accounts payable	0	812
Other current liabilities	0	536
Deferred taxes and other noncurrent liabilities	0	167
Total liabilities held-for-sale	0	1,515
Climate Technologies
Assets
Receivables	0	747
Inventories	0	449
Other current assets	0	49
Property, plant & equipment, net	0	1,122
Goodwill	0	716
Other noncurrent assets	0	265
Total assets held-for-sale	0	3,348
Liabilities
Accounts payable	0	752
Other current liabilities	0	475
Deferred taxes and other noncurrent liabilities	0	154
Total liabilities held-for-sale	0	1,381
ISE and TOD
Assets
Receivables	0	68
Inventories	0	81
Other current assets	0	4
Property, plant & equipment, net	0	141
Goodwill	0	2
Other noncurrent assets	0	12
Total assets held-for-sale	0	308
Liabilities
Accounts payable	0	60
Other current liabilities	0	61
Deferred taxes and other noncurrent liabilities	0	13
Total liabilities held-for-sale	$ 0	$ 134