(Schedule Of Future Amortization Of Acquisition-Related Intangibles) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Mar. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 244
Finite-Lived Intangible Assets, Amortization Expense, Year Two	159
Finite-Lived Intangible Assets, Amortization Expense, Year Three	126
Finite-Lived Intangible Asset, Expected Amortization, Year Four	122
Finite-Lived Intangible Assets, Amortization Expense, Year Five and Thereafter	102
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	129
Acquisition-related intangibles, net	882	$ 263
Excluding In Process and Research Development [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition-related intangibles, net	$ 882