Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
OPERATING ACTIVITIES
Net income (loss)	$ 365	$ 1,421
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion	37	37
Stock-based compensation	102	73
Change in assets and liabilities:
Receivables, net	(44)	294
Other assets	44	24
Accounts payable	(3)	(40)
Accrued and other liabilities	(66)	(56)
Deferred income taxes, net	10	(1,174)
Deferred net revenue (online-enabled games)	(67)	(421)
Net cash provided by operating activities	378	158
INVESTING ACTIVITIES
Capital expenditures	(38)	(45)
Proceeds from maturities and sales of short-term investments	694	358
Purchase of short-term investments	(664)	(1,263)
Net cash used in investing activities	(8)	(950)
FINANCING ACTIVITIES
Proceeds from issuance of common stock	3	3
Cash paid to taxing authorities for shares withheld from employees	(69)	(51)
Repurchase and retirement of common stock	(78)	(305)
Payment for Contingent Consideration Liability, Financing Activities	0	32
Net cash used in financing activities	(144)	(385)
Effect of foreign exchange on cash and cash equivalents	19	2
Increase (decrease) in cash and cash equivalents	245	(1,175)
Beginning cash and cash equivalents	3,768	4,708
Ending cash and cash equivalents	4,013	3,533
Supplemental cash flow information:
Cash paid during the period for income taxes, net	33	12
Non-cash Investing activities
Change in accrued capital expenditures	$ (14)	$ (18)