Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018		Jun. 30, 2017
OPERATING ACTIVITIES
Net income (loss)	$ 293		$ 644
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion	38		31
Stock-based compensation	70		48
Change in assets and liabilities:
Receivables, net	169		135
Other assets	48		80
Accounts payable	8		(44)
Accrued and other liabilities	(85)		(116)
Deferred income taxes, net	(74)		55
Deferred net revenue (online-enabled games)	(347)		(657)
Net cash provided by operating activities	120		176
INVESTING ACTIVITIES
Capital expenditures	(32)		(33)
Proceeds from maturities and sales of short-term investments	207		438
Purchase of short-term investments	(228)		(693)
Acquisition, net of cash acquired	(50)		0
Net cash used in investing activities	(103)		(288)
FINANCING ACTIVITIES
Proceeds from issuance of common stock	1		30
Cash paid to taxing authorities for shares withheld from employees	(89)		(95)
Repurchase and retirement of common stock	(300)		(150)
Net cash used in financing activities	(388)		(215)
Effect of foreign exchange on cash and cash equivalents	(11)		10
Increase (decrease) in cash and cash equivalents	(382)		(317)
Beginning cash and cash equivalents	4,258	[1]	2,565
Ending cash and cash equivalents	3,876		2,248
Supplemental cash flow information:
Cash paid during the period for income taxes, net	$ 28		$ 7

[1] Derived from audited Consolidated Financial Statements.