Fair Value Measurements - Assets Measured at Fair Value (Details) - USD ($) $ in Millions	Jul. 26, 2026	Oct. 26, 2025	Jul. 27, 2025
Assets:
Restricted cash equivalents included in deferred income taxes and other assets	$ 57		$ 70
Money market funds
Assets:
Restricted cash equivalents included in deferred income taxes and other assets	57	$ 71
Bank certificates of deposit and time deposits
Assets:
Available-for-sale debt security investments	7	4
U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	2,900	1,232
Non-U.S. government securities
Assets:
Available-for-sale debt security investments	12	5
Municipal securities
Assets:
Available-for-sale debt security investments	468	468
Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	1,087	854
Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	569	616
Publicly traded equity securities
Assets:
Equity investments with readily determinable values	1,979	2,110
Recurring
Assets:
Available-for-sale debt security investments	10,374	9,072
Equity investments with readily determinable values	1,979	2,110
Total	12,353	11,182
Recurring \| Money market funds
Assets:
Available-for-sale debt security investments	2,249	2,264
Recurring \| Bank certificates of deposit and time deposits
Assets:
Available-for-sale debt security investments	247	184
Recurring \| U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	4,096	2,428
Recurring \| Non-U.S. government securities
Assets:
Available-for-sale debt security investments	12	5
Recurring \| Municipal securities
Assets:
Available-for-sale debt security investments	473	473
Recurring \| Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	2,728	3,102
Recurring \| Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	569	616
Recurring \| Publicly traded equity securities
Assets:
Equity investments with readily determinable values	1,979	2,110
Level 1 \| Recurring
Assets:
Available-for-sale debt security investments	4,758	4,373
Equity investments with readily determinable values	1,979	2,110
Total	6,737	6,483
Level 1 \| Recurring \| Money market funds
Assets:
Available-for-sale debt security investments	2,249	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	2,509	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	1,979	2,110
Level 2 \| Recurring
Assets:
Available-for-sale debt security investments	5,616	4,699
Equity investments with readily determinable values	0	0
Total	5,616	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	247	184
Level 2 \| Recurring \| U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	1,587	319
Level 2 \| Recurring \| Non-U.S. government securities
Assets:
Available-for-sale debt security investments	12	5
Level 2 \| Recurring \| Municipal securities
Assets:
Available-for-sale debt security investments	473	473
Level 2 \| Recurring \| Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	2,728	3,102
Level 2 \| Recurring \| Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	569	616
Level 2 \| Recurring \| Publicly traded equity securities
Assets:
Equity investments with readily determinable values	$ 0	$ 0