Financial Instruments - Notional Amounts of Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 30, 2024	Sep. 30, 2023
Derivatives designated as accounting hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivatives, notional amount	$ 60,265	$ 74,730
Derivatives designated as accounting hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Derivatives, notional amount	17,625	19,375
Derivatives not designated as accounting hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivatives, notional amount	$ 75,552	$ 104,777