Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jul. 30, 2022	Jul. 31, 2021
ASSETS
Allowance for accounts receivable and returns	$ 90	$ 68
Sales-type and direct-financing leases	29	39
Inventory write-downs and capitalization	430	392
Deferred foreign income	210	164
IPR&D and purchased intangible assets	1,184	1,195
Depreciation	10	0
Deferred revenue	1,744	1,526
Credits and net operating loss carryforwards	1,336	1,264
Share-based compensation expense	138	123
Accrued compensation	333	333
Lease liabilities	248	277
Capitalized research expenditures	149	303
Other	439	454
Gross deferred tax assets	6,340	6,138
Valuation allowance	(834)	(771)
Total deferred tax assets	5,506	5,367
LIABILITIES
Goodwill and purchased intangible assets	(767)	(686)
Depreciation	0	(46)
Unrealized gains on investments	(26)	(112)
ROU lease assets	(237)	(260)
Other	(82)	(37)
Total deferred tax liabilities	(1,112)	(1,141)
Total net deferred tax assets	$ 4,394	$ 4,226