Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2017		Jun. 30, 2016
OPERATING ACTIVITIES
Net income	$ 644		$ 440
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion	31		46
Stock-based compensation	48		48
Change in assets and liabilities:
Receivables, net	135		(12)
Other assets	80		6
Accounts payable	(44)		(32)
Accrued and other liabilities	(116)		(72)
Deferred income taxes, net	55		43
Deferred net revenue (online-enabled games)	(657)		(585)
Net cash provided by (used in) operating activities	176		(118)
INVESTING ACTIVITIES
Capital expenditures	(33)		(40)
Proceeds from maturities and sales of short-term investments	438		276
Purchase of short-term investments	(693)		(317)
Net cash used in investing activities	(288)		(81)
FINANCING ACTIVITIES
Payment of convertible notes	0		(27)
Proceeds from issuance of common stock	30		4
Cash paid to taxing authorities for shares withheld from employees	(95)		(97)
Repurchase and retirement of common stock	(150)		(129)
Net cash used in financing activities	(215)		(249)
Effect of foreign exchange on cash and cash equivalents	10		(3)
Decrease in cash and cash equivalents	(317)		(451)
Beginning cash and cash equivalents	2,565	[1]	2,493
Ending cash and cash equivalents	2,248		2,042
Supplemental cash flow information:
Cash paid during the period for income taxes, net	7		10
Non-cash Investing activities
Change in accrued capital expenditures	$ (6)		$ (13)

[1] Derived from audited Consolidated Financial Statements.