Assets and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Apr. 01, 2023	Oct. 01, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 393	$ 308
Other Liabilities	(448)	(354)
Total	(1,295)	(865)
Fair value of borrowings	46,169	44,019
Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset		1
Derivative Liabilities	(1,523)	(1,783)
Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	1,074	2,223
Derivative Liabilities	(807)	(1,239)
Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	22	10
Derivative Liabilities	(6)	(31)
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	393	308
Other Liabilities	0	0
Total	393	308
Fair value of borrowings	0	0
Level 1 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset		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	(448)	(354)
Total	(1,688)	(1,173)
Fair value of borrowings	44,506	42,509
Level 2 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset		1
Derivative Liabilities	(1,523)	(1,783)
Level 2 | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	1,074	2,223
Derivative Liabilities	(807)	(1,239)
Level 2 | Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	22	10
Derivative Liabilities	(6)	(31)
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	1,663	1,510
Level 3 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset		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