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Goodwill And Acquisition-Related Intangibles, Net - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Finite-Lived Intangible Assets [Line Items] |  |  |
Asset impairment charges | $ 0 | $ 70 | $ 106
Maximum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible asset, useful life | 7 years |  |
Minimum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible asset, useful life | 2 years |  |
Weighted Average |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 3 years 2 months 12 days | 4 years 1 month 6 days |
Restructuring |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Asset impairment charges |  |  | 66
Operating expenses |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Asset impairment charges |  | $ 53 | 28
Cost of revenue |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Asset impairment charges |  | $ 17 | $ 12

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