Gross Fair Value of Derivative Positions (Details) - USD ($) $ in Millions | Jul. 01, 2017 | Oct. 01, 2016 |
Current Assets | | |
Derivatives, Fair Value [Line Items] | | |
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | $ 344 | $ 406 |
Derivative Asset, Counterparty Netting Offset | (252) | (241) |
Derivative Asset, Collateral, Obligation to Return Cash, Offset | (45) | (77) |
Net derivative positions | 47 | 88 |
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 | 207 | 278 |
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 | 3 |
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 | 135 | 125 |
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 | |
Other Assets | | |
Derivatives, Fair Value [Line Items] | | |
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 166 | 328 |
Derivative Asset, Counterparty Netting Offset | (112) | (199) |
Derivative Asset, Collateral, Obligation to Return Cash, Offset | (10) | (44) |
Net derivative positions | 44 | 85 |
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 | 155 | 191 |
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 | 10 | 132 |
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 | 1 | 3 |
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 | 0 | 2 |
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 | |
Other Current Liabilities | | |
Derivatives, Fair Value [Line Items] | | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (387) | (359) |
Derivative Liability, Counterparty netting offset | 252 | 316 |
Derivative Liability, Collateral, Right to Reclaim Cash, Offset | (11) | (7) |
Net derivative positions | (124) | (36) |
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 | (120) | (209) |
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 | (100) | (13) |
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 | (2) | (4) |
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 | (165) | (133) |
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 | |
Other Long-Term Liabilities | | |
Derivatives, Fair Value [Line Items] | | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (148) | (168) |
Derivative Liability, Counterparty netting offset | 112 | 124 |
Derivative Liability, Collateral, Right to Reclaim Cash, Offset | 0 | 0 |
Net derivative positions | (36) | (44) |
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 | (120) | (163) |
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 | 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 | (9) | $ (5) |
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 | $ (19) | |