| **Goodwill And Acquisition-Related Intangibles, Net (Schedule Of Acquisition-Related Intangibles) (Details) - USD ($) $ in Millions** | Dec. 31, 2022 | Mar. 31, 2022 |
|---------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Finite-Lived Intangible Assets**                                                                                                    |          |          |  |
| Gross carrying amount                                                                                                                 | $ 1,703       | $ 1,767       |  |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                              | (1,038)       | (885)         |  |
| Acquisition-related intangibles, net                                                                                                  | 665           | 882           |  |
| Intangible Assets, Gross (Excluding Goodwill)                                                                                         | 1,773         | 1,847         |  |
| Acquisition-related intangibles, net                                                                                                  | 735           | 962           | [1] |
| In Process Research and Development [Member]                                                                                          |          |          |  |
| **Finite-Lived Intangible Assets**                                                                                                    |          |          |  |
| Indefinite-lived Intangible Assets (Excluding Goodwill)                                                                               | 70            | 80            |  |
| Indefinite Lived Intangible Asset , Accumulated Amortization                                                                          | 0             | 0             |  |
| Indefinite-Lived Intangible Assets, Net                                                                                               | 70            | 80            |  |
| Developed Technology Rights [Member]                                                                                                  |          |          |  |
| **Finite-Lived Intangible Assets**                                                                                                    |          |          |  |
| Gross carrying amount                                                                                                                 | 1,051         | 1,102         |  |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                              | (723)         | (643)         |  |
| Acquisition-related intangibles, net                                                                                                  | 328           | 459           |  |
| Trademarks [Member]                                                                                                                   |          |          |  |
| **Finite-Lived Intangible Assets**                                                                                                    |          |          |  |
| Gross carrying amount                                                                                                                 | 596           | 609           |  |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                              | (268)         | (212)         |  |
| Acquisition-related intangibles, net                                                                                                  | 328           | 397           |  |
| Registered User Base And Other Intangibles                                                                                            |          |          |  |
| **Finite-Lived Intangible Assets**                                                                                                    |          |          |  |
| Gross carrying amount                                                                                                                 | 56            | 56            |  |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                              | (47)          | (30)          |  |
| Acquisition-related intangibles, net                                                                                                  | $ 9           | $ 26          |  |
|                                                                                                                                       |
| [1]Derived from audited Consolidated Financial Statements.                                                                            |

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.
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Amount before accumulated amortization of intangible assets, excluding goodwill.
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No definition available.
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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.
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