Assets and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Jan. 01, 2022	Oct. 02, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 527	$ 950
Other Liabilities	(438)	(375)
Total	23	565
Fair value of borrowings	59,652	60,324
Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	100	186
Derivative Liabilities	(353)	(287)
Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	696	707
Derivative Liabilities	(525)	(618)
Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	18	10
Derivative Liabilities	(2)	(8)
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	527	950
Other Liabilities	0	0
Total	527	950
Fair value of borrowings	0	0
Level 1 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	0	0
Level 1 | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	0	0
Level 1 | Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Other Liabilities	(438)	(375)
Total	(504)	(385)
Fair value of borrowings	58,177	58,913
Level 2 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	100	186
Derivative Liabilities	(353)	(287)
Level 2 | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	696	707
Derivative Liabilities	(525)	(618)
Level 2 | Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	18	10
Derivative Liabilities	(2)	(8)
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Other Liabilities	0	0
Total	0	0
Fair value of borrowings	1,475	1,411
Level 3 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	0	0
Level 3 | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	0	0
Level 3 | Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	$ 0	$ 0