Summary Of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Summary Of Accounting Policies [Line Items]
Finished products	$ 628,000,000	$ 616,000,000
Raw materials and work in process	1,563,000,000	1,434,000,000
Total inventories	2,191,000,000	2,050,000,000
Land	317,000,000	359,000,000
Buildings	2,364,000,000	2,493,000,000
Machinery and equipment	5,678,000,000	6,097,000,000
Construction in progress	459,000,000	478,000,000
Property, plant and equipment, at cost	8,818,000,000	9,427,000,000
Less: Accumulated depreciation	5,457,000,000	5,689,000,000
Property, plant and equipment, net	$ 3,361,000,000	$ 3,738,000,000
Percentage of revenue from multiple deliverable arrangements	5.00%
Collateral balance posted	$ 0
Collateral held from counterparties	0
Undistributed earnings of non-U.S. subsidiaries	$ 6,000,000,000
Minimum [Member]
Summary Of Accounting Policies [Line Items]
Warranty period (in years)	1 year
Maximum [Member]
Summary Of Accounting Policies [Line Items]
Warranty period (in years)	2 years
Percentage Of Sales On Product Warranty Expense	1.00%
Percentage of revenue from percentage-of-completion accounting method	10.00%
General duration of hedge positions is equal to or less than (in years)	2 years
Building [Member] | Minimum [Member]
Summary Of Accounting Policies [Line Items]
Property, plant and equipment, useful life	30 years
Building [Member] | Maximum [Member]
Summary Of Accounting Policies [Line Items]
Property, plant and equipment, useful life	40 years
Machinery and Equipment [Member] | Minimum [Member]
Summary Of Accounting Policies [Line Items]
Property, plant and equipment, useful life	8 years
Machinery and Equipment [Member] | Maximum [Member]
Summary Of Accounting Policies [Line Items]
Property, plant and equipment, useful life	12 years