Fair Value Measurements - Assets Measured at Fair Value (Details) - USD ($) $ in Millions	Jan. 25, 2026	Oct. 26, 2025	Jan. 26, 2025
Assets:
Restricted cash equivalents included in deferred income taxes and other assets	$ 69		$ 91
Money market funds
Assets:
Restricted cash equivalents included in deferred income taxes and other assets	69	$ 71
Bank certificates of deposit and time deposits
Assets:
Available-for-sale debt security investments	1	4
U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	1,275	1,232
Non-U.S. government securities
Assets:
Available-for-sale debt security investments	3	5
Municipal securities
Assets:
Available-for-sale debt security investments	477	468
Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	989	854
Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	570	616
Publicly traded equity securities
Assets:
Equity investments with readily determinable values	2,576	2,110
Recurring
Assets:
Available-for-sale debt security investments	9,061	9,072
Equity investments with readily determinable values	2,576	2,110
Total	11,637	11,182
Recurring | Money market funds
Assets:
Available-for-sale debt security investments	3,788	2,264
Recurring | Bank certificates of deposit and time deposits
Assets:
Available-for-sale debt security investments	181	184
Recurring | U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	1,673	2,428
Recurring | Non-U.S. government securities
Assets:
Available-for-sale debt security investments	3	5
Recurring | Municipal securities
Assets:
Available-for-sale debt security investments	482	473
Recurring | Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	2,364	3,102
Recurring | Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	570	616
Recurring | Publicly traded equity securities
Assets:
Equity investments with readily determinable values	2,576	2,110
Level 1 | Recurring
Assets:
Available-for-sale debt security investments	5,037	4,373
Equity investments with readily determinable values	2,576	2,110
Total	7,613	6,483
Level 1 | Recurring | Money market funds
Assets:
Available-for-sale debt security investments	3,788	2,264
Level 1 | Recurring | Bank certificates of deposit and time deposits
Assets:
Available-for-sale debt security investments	0	0
Level 1 | Recurring | U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	1,249	2,109
Level 1 | Recurring | Non-U.S. government securities
Assets:
Available-for-sale debt security investments	0	0
Level 1 | Recurring | Municipal securities
Assets:
Available-for-sale debt security investments	0	0
Level 1 | Recurring | Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	0	0
Level 1 | Recurring | Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	0	0
Level 1 | Recurring | Publicly traded equity securities
Assets:
Equity investments with readily determinable values	2,576	2,110
Level 2 | Recurring
Assets:
Available-for-sale debt security investments	4,024	4,699
Equity investments with readily determinable values	0	0
Total	4,024	4,699
Level 2 | Recurring | Money market funds
Assets:
Available-for-sale debt security investments	0	0
Level 2 | Recurring | Bank certificates of deposit and time deposits
Assets:
Available-for-sale debt security investments	181	184
Level 2 | Recurring | U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	424	319
Level 2 | Recurring | Non-U.S. government securities
Assets:
Available-for-sale debt security investments	3	5
Level 2 | Recurring | Municipal securities
Assets:
Available-for-sale debt security investments	482	473
Level 2 | Recurring | Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	2,364	3,102
Level 2 | Recurring | Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	570	616
Level 2 | Recurring | Publicly traded equity securities
Assets:
Equity investments with readily determinable values	$ 0	$ 0