Balance Sheet Details (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013
Balance Sheet Related Disclosures [Abstract]
Depreciation expense	$ 30	$ 28
Deferred net revenue (online-enabled games)	$ 590		$ 1,044	[1]

[1] Derived from audited consolidated financial statements.