Cash, Cash Equivalents and Investments - Summary of Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Millions	May 02, 2021	Oct. 25, 2020	Apr. 26, 2020
Summary of Cash, Cash Equivalents and Investments
Cash	$ 1,257	$ 1,136
Total Cash equivalents	5,048	4,215
Total Cash and Cash equivalents	6,305	5,351	$ 5,281
Cost of fixed income securities	1,929
Equity investments cost	148	132
Equity investments unrealized gain	98	61
Equity investments unrealized loss	14	9
Equity investments estimated fair value	232	184
Total short-term and long-term investments cost	1,929	1,847
Gross unrealized gains on short-term and long-term investments	116	88
Gross unrealized losses on short-term and long-term investments	16	10
Estimated fair value of short-term and long-term investments	2,029	1,925
Cash, cash equivalents and investments, cost	8,234	7,198
Cash, cash equivalents and investments, gross unrealized gains	116	88
Cash, cash equivalents and investments, gross unrealized losses	16	10
Cash, cash equivalents and investments, estimated fair value	8,334	7,276
Total fixed income securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	1,781	1,715
Gross unrealized gains on fixed income securities	18	27
Gross unrealized losses on fixed income securities	2	1
Estimated fair value of fixed income securities	1,797	1,741
Bank certificate of deposit
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	2
Gross unrealized gains on fixed income securities	0
Gross unrealized losses on fixed income securities	0
Estimated fair value of fixed income securities	2
U.S. Treasury and agency securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	329	394
Gross unrealized gains on fixed income securities	1	4
Gross unrealized losses on fixed income securities	0	0
Estimated fair value of fixed income securities	330	398
Non-U.S. government securities | CANADA
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	5
Gross unrealized gains on fixed income securities	0
Gross unrealized losses on fixed income securities	0
Estimated fair value of fixed income securities	5
Municipal securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	359	359
Gross unrealized gains on fixed income securities	5	6
Gross unrealized losses on fixed income securities	0	0
Estimated fair value of fixed income securities	364	365
Commercial paper, corporate bonds and medium-term notes
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	568	492
Gross unrealized gains on fixed income securities	5	8
Gross unrealized losses on fixed income securities	1	1
Estimated fair value of fixed income securities	572	499
Asset-backed and mortgage-backed securities
Summary of Cash, Cash Equivalents and Investments
Cost of fixed income securities	518	470
Gross unrealized gains on fixed income securities	7	9
Gross unrealized losses on fixed income securities	1	0
Estimated fair value of fixed income securities	524	479
Publicly traded equity securities
Summary of Cash, Cash Equivalents and Investments
Equity investments cost	12	11
Equity investments unrealized gain	42	36
Equity investments unrealized loss	0	2
Equity investments estimated fair value	54	45
Equity investments in privately-held companies
Summary of Cash, Cash Equivalents and Investments
Equity investments cost	136	121
Equity investments unrealized gain	56	25
Equity investments unrealized loss	14	7
Equity investments estimated fair value	178	139
Money market funds
Summary of Cash, Cash Equivalents and Investments
Total Cash equivalents	5,038	4,209
Municipal securities
Summary of Cash, Cash Equivalents and Investments
Total Cash equivalents	0	$ 6
Commercial paper, corporate bonds and medium-term notes
Summary of Cash, Cash Equivalents and Investments
Total Cash equivalents	$ 10