Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
OPERATING ACTIVITIES
Net income	$ 222		$ 201
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation, amortization and accretion, net	56		56
Stock-based compensation	33		39
Acquisition-related contingent consideration	7		(20)
Non-cash restructuring charges	0		7
Change in assets and liabilities:
Receivables, net	192		254
Inventories	1		(2)
Other assets	(30)		(29)
Accounts payable	(82)		(157)
Accrued and other liabilities	(195)		(119)
Deferred income taxes, net	2		(10)
Deferred net revenue (online-enabled games)	(454)		(464)
Net cash used in operating activities	(248)		(244)
INVESTING ACTIVITIES
Capital expenditures	(29)		(31)
Proceeds from maturities and sales of short-term investments	133		128
Purchase of short-term investments	(101)		(137)
Acquisition of subsidiaries, net of cash acquired	(5)		0
Net cash used in investing activities	(2)		(40)
FINANCING ACTIVITIES
Proceeds from issuance of common stock	22		0
Repurchase and retirement of common stock	0		(71)
Acquisition-related contingent consideration payment	(1)		(1)
Net cash provided by (used in) financing activities	21		(72)
Effect of foreign exchange on cash and cash equivalents	(7)		(18)
Decrease in cash and cash equivalents	(236)		(374)
Beginning cash and cash equivalents	1,292	[1]	1,293
Ending cash and cash equivalents	1,056		919
Supplemental cash flow information:
Cash paid during the period for income taxes, net	6		8
Non-cash investing activities:
Change in unrealized gains and losses on available-for-sale securities, net of taxes	$ (1)		$ (42)

[1] Derived from audited consolidated financial statements.