Gross Fair Value of Derivative Positions (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 28, 2019
Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	$ 260	$ 368
Derivative Asset, Counterparty Netting Offset	(222)	(231)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(2)	(55)
Net derivative positions	36	82
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	217	302
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	0	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	2	1
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	41	65
Current Assets \| Derivatives not designated as hedges \| Interest rate
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	0	0
Other Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	356	493
Derivative Asset, Counterparty Netting Offset	(289)	(345)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	(6)
Net derivative positions	67	142
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	157	241
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	43	89
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	0	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	156	163
Other Assets \| Derivatives not designated as hedges \| Interest rate
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	(314)	(259)
Derivative Liability, Counterparty netting offset	257	258
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	19	0
Net derivative positions	(38)	(1)
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	(73)	(67)
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	(142)	(82)
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)	(3)
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	(98)	(107)
Other Current Liabilities \| Derivatives not 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, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(360)	(382)
Derivative Liability, Counterparty netting offset	254	318
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	22	7
Net derivative positions	(84)	(57)
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	(235)	(244)
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	0	(1)
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	(112)	(126)
Other Long-Term Liabilities \| Derivatives not designated as hedges \| Interest rate
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	$ (13)	$ (11)

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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