Goodwill And Acquisition-Related Intangibles, Net (Schedule Of Changes In The Carrying Amount Of Goodwill) (Details) $ in Millions		3 Months Ended
		Jun. 30, 2015 USD ($)
Goodwill [Roll Forward]
Goodwill, Gross, Beginning balance		$ 2,081
Accumulated impairment, beginning balance		(368)
Goodwill, Net, Beginning balance	[1]	1,713
Goodwill acquired		0
Effects of foreign currency translation		0
Goodwill, Gross, Ending balance		2,081
Accumulated impairment, ending balance		(368)
Goodwill, Net, Ending balance		$ 1,713

[1] Derived from audited consolidated financial statements.