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Available-for-Sale Debt and Equity Investments (Tables)

3 Months Ended

Oct. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-Sale Debt Investments

The following tables summarize our available-for-sale debt investments (in millions):

October 30, 2021			Amortized Cost						Gross Unrealized Gains						Gross Unrealized and Credit Losses						Fair Value
U.S. government securities			$	2,032					$	12					$	(9)					$	2,035
U.S. government agency securities			142						—						—						142
Corporate debt securities			9,114						156						(50)						9,220
U.S. agency mortgage-backed securities			2,790						24						(21)						2,793
Commercial paper			1,054						—						—						1,054
Certificates of deposit			269						—						—						269
Total			$	15,401					$	192					$	(80)					$	15,513

July 31, 2021			Amortized Cost						Gross Unrealized Gains						Gross Unrealized and Credit Losses						Fair Value
U.S. government securities			$	1,773					$	21					$	—					$	1,794
U.S. government agency securities			152						—						—						152
Non-U.S. government and agency securities			3						—						—						3
Corporate debt securities			8,727						213						(30)						8,910
U.S. agency mortgage-backed securities			2,838						34						(10)						2,862
Commercial paper			1,190						—						—						1,190
Certificates of deposit			295						—						—						295
Total			$	14,978					$	268					$	(40)					$	15,206

Gross Realized Gains and Gross Realized Losses Related to Available-for-Sale Investment

The following table presents the gross realized gains and gross realized losses related to available-for-sale debt investments (in millions):

			Three Months Ended
			October 30, 2021						October 24, 2020
Gross realized gains			$	6					$	15
Gross realized losses			—						—
Total			$	6					$	15

Available-for-Sale Investments with Gross Unrealized Losses

The following tables present the breakdown of the available-for-sale debt investments with gross unrealized losses and the duration that those losses had been unrealized at October 30, 2021 and July 31, 2021 (in millions):

			UNREALIZED LOSSES LESS THAN 12 MONTHS												UNREALIZED LOSSES 12 MONTHS OR GREATER												TOTAL
October 30, 2021			Fair Value						Gross Unrealized Losses						Fair Value						Gross Unrealized Losses						Fair Value						Gross  Unrealized  Losses
U.S. government securities			$	1,341					$	(9)					$	2					$	—					$	1,343					$	(9)
U.S. government agency securities			100						—						—						—						100						—
Corporate debt securities			3,204						(24)						27						(1)						3,231						(25)
U.S. agency mortgage-backed securities			1,937						(20)						52						(1)						1,989						(21)
Commercial paper			25						—						—						—						25						—
Total			$	6,607					$	(53)					$	81					$	(2)					$	6,688					$	(55)

			UNREALIZED LOSSES LESS THAN 12 MONTHS												UNREALIZED LOSSES 12 MONTHS OR GREATER												TOTAL
July 31, 2021			Fair Value						Gross Unrealized Losses						Fair Value						Gross Unrealized Losses						Fair Value						Gross  Unrealized  Losses
U.S. government securities			$	468					$	—					$	—					$	—					$	468					$	—
U.S. government agency securities			26						—						—						—						26						—
Corporate debt securities			1,086						(5)						6						—						1,092						(5)
U.S. agency mortgage-backed securities			1,293						(10)						13						—						1,306						(10)
Commercial paper			37						—						—						—						37						—
Total			$	2,910					$	(15)					$	19					$	—					$	2,929					$	(15)

Maturities of Available-for-Sale Debt Investments

The following table summarizes the maturities of our available-for-sale debt investments as of October 30, 2021 (in millions): 

			Amortized Cost						Fair Value
Within 1 year			$	4,291					$	4,281
After 1 year through 5 years			8,013						8,106
After 5 years through 10 years			301						326
After 10 years			6						7
Mortgage-backed securities with no single maturity			2,790						2,793
Total			$	15,401					$	15,513

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Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales.

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