Balance Sheet Details (Accrued And Other Current Liabilities Schedule) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Mar. 31, 2016
Balance Sheet Related Disclosures [Abstract]
Accrued compensation and benefits	$ 267	$ 256
Other accrued expenses	210	218
Accrued royalties	165	159
Deferred net revenue (other)	147	77
Accrued and other current liabilities	$ 789	$ 710