Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Revenues:
Total revenues		$ 6,863	$ 5,419	$ 19,166	$ 15,435
Cost of revenues:
Total cost of revenues	[1],[2]	1,844	1,394	5,012	3,959
Gross profit		5,019	4,025	14,154	11,476
Operating expenses:
Research and development	[1],[2]	1,203	902	3,174	2,659
Marketing and sales	[1],[2]	3,111	2,377	8,391	7,042
General and administrative	[1],[2]	667	522	1,865	1,513
Total operating expenses	[1],[2]	4,981	3,801	13,430	11,214
Income from operations		38	224	724	262
Gains on strategic investments, net		363	1,036	1,177	1,910
Other expense		(102)	(10)	(172)	(36)
Income before benefit from (provision for) income taxes		299	1,250	1,729	2,136
Benefit from (provision for) income taxes	[3]	169	(169)	(257)	1,669
Net income		$ 468	$ 1,081	$ 1,472	$ 3,805
Basic net income per share (in dollars per share)		$ 0.48	$ 1.19	$ 1.56	$ 4.20
Diluted net income per share (in dollars per share)		$ 0.47	$ 1.15	$ 1.53	$ 4.11
Shares used in computing basic net income per share (in shares)		980	911	945	905
Shares used in computing diluted net income per share (in shares)		1,001	939	964	926
Subscription and support
Revenues:
Total revenues		$ 6,379	$ 5,085	$ 17,829	$ 14,500
Cost of revenues:
Total cost of revenues	[1],[2]	1,335	1,060	3,603	3,039
Professional services and other
Revenues:
Total revenues		484	334	1,337	935
Cost of revenues:
Total cost of revenues	[1],[2]	$ 509	$ 334	$ 1,409	$ 920

[1] Amounts include amortization of intangible assets acquired through business combinations, as follows:  Three Months Ended October 31,Nine Months Ended October 31, 2021202020212020Cost of revenues$272 $169 $624 $494 Marketing and sales236 114 491 344 

[2] Amounts include stock-based expense, as follows:  Three Months Ended October 31,Nine Months Ended October 31, 2021202020212020Cost of revenues$103 $65 $280 $180 Research and development276 181 646 531 Marketing and sales316 242 817 718 General and administrative117 78 273 219 

[3] During the second quarter of fiscal 2021, the Company recorded approximately $2.0 billion of a one-time benefit from a discrete tax item related to the recognition of deferred tax assets resulting from an intra-entity transfer of intangible property.