Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2017		Sep. 30, 2016
OPERATING ACTIVITIES
Net income (loss)	$ 622		$ 402
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion	63		91
Stock-based compensation	110		96
Change in assets and liabilities:
Receivables, net	(454)		(493)
Other assets	66		37
Accounts payable	104		133
Accrued and other liabilities	100		109
Deferred income taxes, net	40		20
Deferred net revenue (online-enabled games)	(423)		(391)
Net cash provided by operating activities	228		4
INVESTING ACTIVITIES
Capital expenditures	(63)		(69)
Proceeds from maturities and sales of short-term investments	1,050		644
Purchase of short-term investments	(1,395)		(824)
Net cash used in investing activities	(408)		(249)
FINANCING ACTIVITIES
Payment of convertible notes	0		(163)
Proceeds from issuance of common stock	57		31
Cash paid to taxing authorities for shares withheld from employees	(105)		(106)
Repurchase and retirement of common stock	(303)		(256)
Net cash used in financing activities	(351)		(494)
Effect of foreign exchange on cash and cash equivalents	33		(8)
Decrease in cash and cash equivalents	(498)		(747)
Beginning cash and cash equivalents	2,565	[1]	2,493
Ending cash and cash equivalents	2,067		1,746
Supplemental cash flow information:
Cash paid during the period for income taxes, net	28		26
Cash paid during the period for interest	21		22
Non-cash Investing activities
Change in accrued capital expenditures	$ (6)		$ (17)

[1] Derived from audited Consolidated Financial Statements.