Net Gains or Losses Recognized on Economic Exposures Associated With Foreign Currency Exchange Contracts (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Jan. 01, 2022
Costs and Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) on foreign currency denominated assets and liabilities	$ 145	$ (63)
Net gain (loss) on foreign exchange risk management contracts not designated as hedges	(213)	33
Net gain (loss)	(68)	(30)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) on foreign currency denominated assets and liabilities	(18)	1
Net gain (loss) on foreign exchange risk management contracts not designated as hedges	18	0
Net gain (loss)	0	1
Income Taxes
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) on foreign currency denominated assets and liabilities	(88)	8
Net gain (loss) on foreign exchange risk management contracts not designated as hedges	70	(8)
Net gain (loss)	$ (18)	$ 0