Cash, Cash Equivalents and Investments - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Cash and Cash Equivalents [Line Items]
Equity Investment without Readily Determinable Fair Value	$ 37	$ 32
Impairment on certain private equity securities without readily determinable fair value	0	3	$ 0
Available-for-sale Securities, Gross Realized Losses	0	0	0
Investments with continuous unrealized losses	$ 7	8
Gain on sale of auction rate securities		$ 3	$ 0
Minimum
Cash and Cash Equivalents [Line Items]
Lease term	1 month
Maximum
Cash and Cash Equivalents [Line Items]
Lease term	5 years

Equity Investment without Readily Determinable Fair Value

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- Definition

Gain on sale of auction rate securities

+ References

No definition available.

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- Definition

Letters of Credit, Lease Term

+ References

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- Definition

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27337-111563

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- Definition

This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of impairment loss on investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120269885&loc=SL75117539-209714

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