Goodwill And Acquisition-Related Intangibles, Net (Schedule Of Future Amortization Of Acquisition-Related Intangibles) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Mar. 31, 2022
Finite-Lived Intangible Assets
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 51
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	150
Finite-Lived Intangible Assets, Amortization Expense, Year Two	122
Finite-Lived Intangible Assets, Amortization Expense, Year Three	118
Finite-Lived Intangible Assets, Amortization Expense, Year Four	99
Finite-Lived Intangible Assets, Amortization Expense, Year Five	96
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	29
Finite-Lived Intangible Assets, Net	665	$ 882
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year through after Year Five [Member]
Finite-Lived Intangible Assets
Finite-Lived Intangible Assets, Net	$ 665