Investments (Tables)

12 Months Ended

Jan. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

At January 31, 2020, marketable securities consisted of the following (in millions):

Investments classified as Marketable Securities	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Corporate notes and obligations	$	2,199	$	9	$	(1)	$	2,207
U.S. treasury securities	182		1		0		183
Mortgage backed obligations	225		1		0		226
Asset backed securities	779		2		0		781
Municipal securities	157		1		0		158
Foreign government obligations	69		0		0		69
U.S. agency obligations	12		0		0		12
Time deposits	1		0		0		1
Covered bonds	165		0		0		165
Total marketable securities	$	3,789	$	14	$	(1)	$	3,802

At January 31, 2019, marketable securities consisted of the following (in millions):

Investments classified as Marketable Securities	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Corporate notes and obligations	$	1,027	$	0	$	(8)	$	1,019
U.S. treasury securities	89		0		(1)		88
Mortgage backed obligations	79		0		(1)		78
Asset backed securities	245		0		(1)		244
Municipal securities	104		0		0		104
Foreign government obligations	58		0		(1)		57
U.S. agency obligations	4		0		0		4
Time deposits	4		0		0		4
Covered bonds	75		0		0		75
Total marketable securities	$	1,685	$	0	$	(12)	$	1,673

Schedule of Short-Term and Long-Term Marketable Securities

The contractual maturities of the investments classified as marketable securities are as follows (in millions):

	As of
	January 31, 2020		January 31, 2019
Due within 1 year	$	1,332	$	482
Due in 1 year through 5 years	2,466		1,189
Due in 5 years through 10 years	4		2
	$	3,802	$	1,673

Schedule of Marketable Securities in a Unrealized Loss Position

As of January 31, 2020, the following marketable securities were in an unrealized loss position (in millions):

	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Corporate notes and obligations	$	285	$	(1)	$	0	$	0	$	285	$	(1)

Schedule of Components of Investment Income

The components of investment income are presented below (in millions):

	Fiscal Year Ended January 31,
	2020		2019		2018
Interest income	$	117	$	61	$	37
Realized gains	2		1		1
Realized losses	(1)		(5)		(2)
Investment income	$	118	$	57	$	36

Schedules of Strategic Investments

Strategic investments by form and measurement category as of January 31, 2020 were as follows (in millions):

	Measurement Category
	Fair Value		Measurement Alternative		Other		Total
Equity securities	$	370	$	1,502	$	40	$	1,912
Debt securities	0		0		51		51
Balance as of January 31, 2020	$	370	$	1,502	$	91	$	1,963

Strategic investments by form and measurement category as of January 31, 2019 were as follows (in millions):

	Measurement Category
	Fair Value		Measurement Alternative		Other		Total
Equity securities	$	436	$	785	$	50	$	1,271
Debt securities	0		0		31		31
Balance as of January 31, 2019	$	436	$	785	$	81	$	1,302

Measurement Alternative Adjustments

The components of privately held equity securities accounted for under the measurement alternative included in the table above are presented below (in millions):

	Fiscal Year Ended January 31,
	2020		2019
Carrying amount, beginning of period	$	785	$	548
Adjustments related to privately held equity securities:
Net additions (1)	507		95
Upward adjustments	280		174
Impairments and downward adjustments	(70)		(32)
Carrying amount, end of period	$	1,502	$	785

(1) Net additions include additions from purchases and reductions due to exits of securities and reclassifications due to changes to capital structure.