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Fair Value (Tables) | 6 Months Ended
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Sep. 30, 2025
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table presents the Company’s fair value hierarchy for assets and liabilities measured and recognized at fair value, excluding investments where the NAV practical expedient has been elected, on a recurring basis:
|  | As of September 30, 2025 |  | As of March 31, 2025
(in millions) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 2,112 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,112 |  |  | $ | 1,914 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,914 |
Short-term investments (1) |  | 740 |  |  | — |  |  | — |  |  | 740 |  |  | 740 |  |  | — |  |  | — |  |  | 740 |
Equity investments (2) |  | 94 |  |  | — |  |  | 200 |  |  | 294 |  |  | 98 |  |  | — |  |  | 200 |  |  | 298 |
Convertible loans receivable |  | — |  |  | — |  |  | 34 |  |  | 34 |  |  | — |  |  | — |  |  | 34 |  |  | 34 |
Foreign currency forward contracts |  | — |  |  | 8 |  |  | — |  |  | 8 |  |  | — |  |  | 7 |  |  | — |  |  | 7 |
Total financial assets |  | $ | 2,946 |  |  | $ | 8 |  |  | $ | 234 |  |  | $ | 3,188 |  |  | $ | 2,752 |  |  | $ | 7 |  |  | $ | 234 |  |  | $ | 2,993 |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward contracts |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |  |  | $ | 2 |
Total financial liabilities |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |  |  | $ | 2 |
(1)Short-term investments represent term deposits with banks with a maturity between 3 and 12 months. (2)In accordance with ASC Subtopic 820-10, Fair Value Measurements, investments that are measured at fair value using the NAV practical expedient are not classified in the fair value hierarchy.
Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation | The following tables summarize changes in the fair value, along with other activity associated with the Company’s Level 3 financial assets and liabilities. See below for a description of the valuation techniques and inputs used in the fair value measurement of Level 3 investments including equity method investments, convertible loans receivable, and currency exchange contracts. Equity Method Investments
|  | Three Months Ended September 30, |  | Six Months Ended September 30,
(in millions) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Fair value of financial assets at the beginning of the period |  | $ | 200 |  |  | $ | 466 |  |  | $ | 200 |  |  | $ | 466 |
Fair value losses recognized in the Condensed Consolidated Income Statements |  | — |  |  | (9) |  |  | — |  |  | (9) |
Fair value at the end of the period |  | $ | 200 |  |  | $ | 457 |  |  | $ | 200 |  |  | $ | 457 |
Convertible Loans Receivable
|  | Three Months Ended September 30, |  | Six Months Ended September 30,
(in millions) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Fair value of financial assets at the beginning of the period |  | $ | 34 |  |  | $ | 33 |  |  | $ | 34 |  |  | $ | 32 |
Fair value gains recognized in the Condensed Consolidated Income Statements |  | — |  |  | — |  |  | — |  |  | 1 |
Fair value at the end of the period |  | $ | 34 |  |  | $ | 33 |  |  | $ | 34 |  |  | $ | 33 |
Schedule of Fair Value Measurement Inputs and Valuation Techniques | The following tables provide quantitative information related to certain key assumptions utilized in the valuation of equity method investments accounted for under the fair value option:
As of September 30, 2025 and March 31, 2025
(in millions) |  | Fair Value |  |  |  | Valuation Technique |  | Unobservable Inputs |  | Range of Estimates
Equity Method Investments |  | $200 |  |  |  | Acetone Limited – Market-Calibration or discounted cash flow |  | LTM Revenue Multiple |  | 1.1x - 1.3x
|  |  | Ampere – PWER |  | Probability of exit event |  | 100%
|  |  |  | Time to future exit scenario |  | 0.8 years

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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