Gross Fair Value of Derivative Positions (Details) - USD ($) $ in Millions	Apr. 02, 2022	Oct. 02, 2021
Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	$ 535	$ 350
Derivative Asset, Counterparty Netting Offset	(414)	(301)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(69)	(3)
Net derivative positions	52	46
Current Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	311	165
Current Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	7	0
Current Assets | Derivatives designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	24	10
Current Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	184	183
Current Assets | Derivatives not designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	9	8
Other Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	451	545
Derivative Asset, Counterparty Netting Offset	(393)	(360)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	(51)
Net derivative positions	58	134
Other Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	330	240
Other Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	0	186
Other Assets | Derivatives designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	3	0
Other Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	118	119
Other Assets | Derivatives not designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	0	0
Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(1,488)	(617)
Derivative Liability, Counterparty netting offset	593	460
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	855	157
Net derivative positions	(40)	0
Other Current Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(218)	(122)
Other Current Liabilities | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(1,026)	(287)
Other Current Liabilities | Derivatives designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(1)	0
Other Current Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(243)	(208)
Other Current Liabilities | Derivatives not designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0	0
Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(310)	(288)
Derivative Liability, Counterparty netting offset	214	201
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	49	73
Net derivative positions	(47)	(14)
Other Long-Term Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(151)	(83)
Other Long-Term Liabilities | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0	0
Other Long-Term Liabilities | Derivatives designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(1)	0
Other Long-Term Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(158)	(205)
Other Long-Term Liabilities | Derivatives not designated as hedges | Other Derivative
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	$ 0	$ 0