Available-for-Sale Debt and Equity Investments - Maturities of Available-for-Sale Debt Investments (Details) - USD ($) $ in Millions	Oct. 29, 2022	Jul. 30, 2022
Amortized Cost
Within 1 year	$ 4,483
After 1 year through 5 years	6,478
After 5 years through 10 years	56
After 10 years	1
Mortgage-backed securities with no single maturity	2,071
Amortized Cost	13,089	$ 12,467
Fair Value
Within 1 year	4,399
After 1 year through 5 years	6,002
After 5 years through 10 years	47
After 10 years	1
Mortgage-backed securities with no single maturity	1,798
Fair Value	$ 12,247	$ 11,947

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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