Balance Sheet Details (Accrued And Other Current Liabilities Schedule) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Mar. 31, 2012
Balance Sheet Related Disclosures [Abstract]
Other accrued expenses	$ 332	$ 441
Deferred net revenue (other)	198	85
Accrued compensation and benefits	187	233
Accrued royalties	123	98
Accrued and other current liabilities	$ 840	$ 857	[1]

[1] Derived from audited consolidated financial statements.