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Cash, Cash Equivalents and Investments - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2021 | Nov. 30, 2020 | Feb. 28, 2021
Cash, Cash Equivalents and Investments [Line Items] |  |  |  |  |
Investments that are communicated to the third party for consideration of reasonableness, threshold limit for fair values |  |  | 0.50% |  |
Equity Securities without Readily Determinable Fair Value, Amount | $ 30 |  | $ 30 |  | $ 37
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount | 5 |  | 5 |  |
Distribution from long-term investments | 35 |  | 35 | $ 0 |
Realized gains (losses) on non-marketable equity investments without readily determinable fair value sold during the period | 22 |  |  |  |
Return of capital on Limited Partnership Investments | 13 |  | 13 |  |
Debt Securities, Available-for-sale, Realized Gain (Loss) | 0 | $ 0 | 0 | $ 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | $ 0 |  | $ 0 |  | $ 0
Minimum |  |  |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |  |  |
Letters of credit terms |  |  | 1 month |  |
Maximum |  |  |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |  |  |
Letters of credit terms |  |  | 4 years |  |

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- Definition Investments That Are Communicated To Third Party For Consideration Of Reasonableness Threshold Limit For Fair Value + References No definition available. + Details
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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of long-term marketable securities (trading, held-to-maturity, or available-for-sale) and other investments during the period. + References No definition available. + Details
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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. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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