Cash, Cash Equivalents and Investments - Summary of Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Millions	Jan. 30, 2022	Oct. 31, 2021	Jan. 31, 2021
Summary of Cash, Cash Equivalents and Investments
Cash	$ 1,260	$ 1,407
Total Cash equivalents	4,004	3,588
Total Cash and Cash equivalents	5,264	4,995	$ 6,213
Equity investments cost	585	583
Equity investments unrealized gain	128	121
Equity investments unrealized loss	21	17
Equity investments estimated fair value	692	687
Total short-term and long-term investments cost	2,403	2,411
Gross unrealized gains on short-term and long-term investments	132	129
Gross unrealized losses on short-term and long-term investments	36	21
Estimated fair value of short-term and long-term investments	2,499	2,519
Cash, cash equivalents and investments, cost	7,667	7,406
Cash, cash equivalents and investments, gross unrealized gains	132	129
Cash, cash equivalents and investments, gross unrealized losses	36	21
Cash, cash equivalents and investments, estimated fair value	7,763	7,514
Total fixed income securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	1,818	1,828
Gross unrealized gains on fixed income securities	4	8
Gross unrealized losses on fixed income securities	15	4
Estimated fair value of fixed income securities	1,807	1,832
U.S. Treasury and agency securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	324	314
Gross unrealized gains on fixed income securities	0	0
Gross unrealized losses on fixed income securities	3	0
Estimated fair value of fixed income securities	321	314
Non-U.S. government securities | CANADA
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	5	5
Gross unrealized gains on fixed income securities	0	0
Gross unrealized losses on fixed income securities	0	0
Estimated fair value of fixed income securities	5	5
Municipal securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	371	367
Gross unrealized gains on fixed income securities	1	3
Gross unrealized losses on fixed income securities	3	1
Estimated fair value of fixed income securities	369	369
Commercial paper, corporate bonds and medium-term notes
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	602	587
Gross unrealized gains on fixed income securities	1	2
Gross unrealized losses on fixed income securities	5	2
Estimated fair value of fixed income securities	598	587
Asset-backed and mortgage-backed securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	516	555
Gross unrealized gains on fixed income securities	2	3
Gross unrealized losses on fixed income securities	4	1
Estimated fair value of fixed income securities	514	557
Publicly traded equity securities
Summary of Cash, Cash Equivalents and Investments
Equity investments cost	21	22
Equity investments unrealized gain	34	39
Equity investments unrealized loss	7	3
Equity investments estimated fair value	48	58
Equity investments in privately-held companies
Summary of Cash, Cash Equivalents and Investments
Equity investments cost	564	561
Equity investments unrealized gain	94	82
Equity investments unrealized loss	14	14
Equity investments estimated fair value	644	629
Money market funds
Summary of Cash, Cash Equivalents and Investments
Total Cash equivalents	3,968	3,556
Municipal securities
Summary of Cash, Cash Equivalents and Investments
Total Cash equivalents	14	22
Commercial paper, corporate bonds and medium-term notes
Summary of Cash, Cash Equivalents and Investments
Total Cash equivalents	$ 22	$ 10