Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Jan. 24, 2026	Jul. 26, 2025
Assets:
Available-for-sale debt investments:	$ 7,960	$ 7,381
Marketable equity securities	359	383
Derivative assets	90	32
Total	13,891	14,581
Liabilities:
Derivative liabilities	83	31
Total	83	31
Money market funds
Assets:
Other current assets:	0	563
U.S. government securities
Assets:
Available-for-sale debt investments:	1,756	1,961
U.S. government agency securities
Assets:
Available-for-sale debt investments:	49	67
Non-U.S. government and agency securities
Assets:
Available-for-sale debt investments:	443	458
Corporate debt securities
Assets:
Available-for-sale debt investments:	3,079	3,090
Mortgage- and asset-backed securities
Assets:
Available-for-sale debt investments:	236	286
Commercial paper
Assets:
Available-for-sale debt investments:	1,337	950
Certificates of deposit
Assets:
Available-for-sale debt investments:	1,060	569
Money market funds
Assets:
Cash equivalents:	5,348	5,885
Commercial paper
Assets:
Cash equivalents:	134	336
Corporate debt securities
Assets:
Cash equivalents:	0	1
Level 1
Assets:
Marketable equity securities	359	383
Derivative assets	0	0
Total	5,707	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:	5,348	5,885
Level 1 \| Commercial paper
Assets:
Cash equivalents:	0	0
Level 1 \| Corporate debt securities
Assets:
Cash equivalents:	0	0
Level 2
Assets:
Marketable equity securities	0	0
Derivative assets	90	32
Total	8,184	7,750
Liabilities:
Derivative liabilities	83	31
Total	83	31
Level 2 \| Money market funds
Assets:
Other current assets:	0	0
Level 2 \| U.S. government securities
Assets:
Available-for-sale debt investments:	1,756	1,961
Level 2 \| U.S. government agency securities
Assets:
Available-for-sale debt investments:	49	67
Level 2 \| Non-U.S. government and agency securities
Assets:
Available-for-sale debt investments:	443	458
Level 2 \| Corporate debt securities
Assets:
Available-for-sale debt investments:	3,079	3,090
Level 2 \| Mortgage- and asset-backed securities
Assets:
Available-for-sale debt investments:	236	286
Level 2 \| Commercial paper
Assets:
Available-for-sale debt investments:	1,337	950
Level 2 \| Certificates of deposit
Assets:
Available-for-sale debt investments:	1,060	569
Level 2 \| Money market funds
Assets:
Cash equivalents:	0	0
Level 2 \| Commercial paper
Assets:
Cash equivalents:	134	336
Level 2 \| Corporate debt securities
Assets:
Cash equivalents:	$ 0	$ 1

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