Goodwill And Acquisition-Related Intangibles, Net (Schedule Of Changes In The Carrying Amount Of Goodwill) (Details) $ in Millions	6 Months Ended
	Sep. 30, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill, Gross, Beginning balance	$ 3,236
Accumulated impairment, beginning balance	(368)
Goodwill, Net, Beginning balance	2,868	[1]
Goodwill acquired	2,591
Effects of foreign currency translation	0
Goodwill, Gross, Ending balance	5,827
Accumulated impairment, ending balance	(368)
Goodwill, Net, Ending balance	$ 5,459

[1] Derived from audited Consolidated Financial Statements.