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(Schedule Of Changes In The Carrying Amount Of Goodwill) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Goodwill [Roll Forward] |  |  |
Goodwill, Gross | $ 5,755 | $ 3,236 | $ 2,253
Goodwill, Accumulated Impairment | (368) | (368) | (368)
Goodwill, Net | 5,387 | 2,868 | $ 1,885
Goodwill acquired | 2,519 | 984 |
Effects of foreign currency translation | $ 0 | $ (1) |

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