Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Apr. 25, 2026	Jul. 26, 2025
Assets:
Available-for-sale debt investments:	$ 9,180	$ 7,381
Marketable equity securities	377	383
Derivative assets	90	32
Total	14,957	14,581
Liabilities:
Derivative liabilities	86	31
Total	86	31
Money market funds
Assets:
Other current assets:	0	563
U.S. government securities
Assets:
Available-for-sale debt investments:	1,712	1,961
U.S. government agency securities
Assets:
Available-for-sale debt investments:	41	67
Non-U.S. government and agency securities
Assets:
Available-for-sale debt investments:	400	458
Corporate debt securities
Assets:
Available-for-sale debt investments:	2,758	3,090
Mortgage- and asset-backed securities
Assets:
Available-for-sale debt investments:	203	286
Commercial paper
Assets:
Available-for-sale debt investments:	2,731	950
Certificates of deposit
Assets:
Available-for-sale debt investments:	1,335	569
Money market funds
Assets:
Cash equivalents:	4,258	5,885
Commercial paper
Assets:
Cash equivalents:	953	336
Certificates of deposit
Assets:
Cash equivalents:	25	0
Corporate debt securities
Assets:
Cash equivalents:	16	1
Non-U.S. government and agency securities
Assets:
Cash equivalents:	58	0
Level 1
Assets:
Marketable equity securities	377	383
Derivative assets	0	0
Total	4,635	6,831
Liabilities:
Derivative liabilities	0	0
Total	0	0
Level 1 \| Money market funds
Assets:
Other current assets:	0	563
Level 1 \| U.S. government securities
Assets:
Available-for-sale debt investments:	0	0
Level 1 \| U.S. government agency securities
Assets:
Available-for-sale debt investments:	0	0
Level 1 \| Non-U.S. government and agency securities
Assets:
Available-for-sale debt investments:	0	0
Level 1 \| Corporate debt securities
Assets:
Available-for-sale debt investments:	0	0
Level 1 \| Mortgage- and asset-backed securities
Assets:
Available-for-sale debt investments:	0	0
Level 1 \| Commercial paper
Assets:
Available-for-sale debt investments:	0	0
Level 1 \| Certificates of deposit
Assets:
Available-for-sale debt investments:	0	0
Level 1 \| Money market funds
Assets:
Cash equivalents:	4,258	5,885
Level 1 \| Commercial paper
Assets:
Cash equivalents:	0	0
Level 1 \| Certificates of deposit
Assets:
Cash equivalents:	0	0
Level 1 \| Corporate debt securities
Assets:
Cash equivalents:	0	0
Level 1 \| Non-U.S. government and agency securities
Assets:
Cash equivalents:	0	0
Level 2
Assets:
Marketable equity securities	0	0
Derivative assets	90	32
Total	10,322	7,750
Liabilities:
Derivative liabilities	86	31
Total	86	31
Level 2 \| Money market funds
Assets:
Other current assets:	0	0
Level 2 \| U.S. government securities
Assets:
Available-for-sale debt investments:	1,712	1,961
Level 2 \| U.S. government agency securities
Assets:
Available-for-sale debt investments:	41	67
Level 2 \| Non-U.S. government and agency securities
Assets:
Available-for-sale debt investments:	400	458
Level 2 \| Corporate debt securities
Assets:
Available-for-sale debt investments:	2,758	3,090
Level 2 \| Mortgage- and asset-backed securities
Assets:
Available-for-sale debt investments:	203	286
Level 2 \| Commercial paper
Assets:
Available-for-sale debt investments:	2,731	950
Level 2 \| Certificates of deposit
Assets:
Available-for-sale debt investments:	1,335	569
Level 2 \| Money market funds
Assets:
Cash equivalents:	0	0
Level 2 \| Commercial paper
Assets:
Cash equivalents:	953	336
Level 2 \| Certificates of deposit
Assets:
Cash equivalents:	25	0
Level 2 \| Corporate debt securities
Assets:
Cash equivalents:	16	1
Level 2 \| Non-U.S. government and agency securities
Assets:
Cash equivalents:	$ 58	$ 0

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