Pension and Other Benefit Programs - Defined Benefit Plan Assets Measured at Fair Value (Detail) - USD ($) $ in Millions		Oct. 01, 2022	Oct. 02, 2021
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		$ 15,470	$ 18,965
Percentage of plan assets mix		100.00%	100.00%
Cash
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Percentage of plan assets mix		1.00%	0.00%
Equity Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Percentage of plan assets mix		20.00%	23.00%
Mutual Funds
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Percentage of plan assets mix		7.00%	7.00%
US Government Debt Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Percentage of plan assets mix		15.00%	15.00%
Corporate Bond Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Percentage of plan assets mix		5.00%	6.00%
Other Mortgage and Asset Backed Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Percentage of plan assets mix		1.00%	1.00%
Derivatives and Other, Net
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Percentage of plan assets mix		0.00%	0.00%
Common Collective Funds
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		$ 3,479	$ 4,550
Percentage of plan assets mix		22.00%	24.00%
Alternative Investments Funds
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		$ 4,208	$ 4,342
Percentage of plan assets mix		27.00%	23.00%
Money Market Funds and Other
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		$ 240	$ 254
Percentage of plan assets mix		2.00%	1.00%
Level 1 | Cash
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		$ 177	$ 77
Level 1 | Equity Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy	[1]	3,118	4,407
Level 1 | Mutual Funds
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		1,044	1,326
Level 1 | US Government Debt Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		2,061	2,437
Level 1 | Corporate Bond Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		0	0
Level 1 | Other Mortgage and Asset Backed Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		0	0
Level 1 | Derivatives and Other, Net
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		2	8
Level 1 | Total Investments at Fair Value
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		6,402	8,255
Level 2 | Cash
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		0	0
Level 2 | Equity Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy	[1]	0	0
Level 2 | Mutual Funds
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		0	0
Level 2 | US Government Debt Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		293	349
Level 2 | Corporate Bond Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		751	1,098
Level 2 | Other Mortgage and Asset Backed Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		84	96
Level 2 | Derivatives and Other, Net
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		13	21
Level 2 | Total Investments at Fair Value
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		1,141	1,564
Level 1 and 2 | Cash
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		177	77
Level 1 and 2 | Equity Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy	[1]	3,118	4,407
Level 1 and 2 | Mutual Funds
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		1,044	1,326
Level 1 and 2 | US Government Debt Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		2,354	2,786
Level 1 and 2 | Corporate Bond Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		751	1,098
Level 1 and 2 | Other Mortgage and Asset Backed Securities
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		84	96
Level 1 and 2 | Derivatives and Other, Net
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		15	29
Level 1 and 2 | Total Investments at Fair Value
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets in the Fair Value Hierarchy		$ 7,543	$ 9,819

[1] Includes 2.9 million shares of Company common stock valued at $273 million (2% of total plan assets) and 2.9 million shares valued at $489 million (3% of total plan assets) at October 1, 2022 and October 2, 2021, respectively.