Summary Of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Sep. 30, 2023 USD ($)
Summary Of Accounting Policies [Line Items]
Percentage of revenue from percentage-of-completion accounting method	10.00%
Percentage of revenue from multiple deliverable arrangements	10.00%
Collateral balance posted	$ 0
Collateral held from counterparties	0
Undistributed earnings of non-U.S. subsidiaries	$ 6,500,000,000
Minimum
Summary Of Accounting Policies [Line Items]
Warranty period (in years)	1 year
Maximum
Summary Of Accounting Policies [Line Items]
Warranty period (in years)	2 years
Product warranty expense, percent of sales, less than	0.50%
General duration of hedge positions is equal to or less than (in years)	2 years