Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
OPERATING ACTIVITIES
Net income (loss)	$ 2,275	$ 548
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion	72	74
Stock-based compensation	165	136
Change in assets and liabilities:
Receivables, net	(235)	(422)
Other assets	33	20
Accounts payable	51	132
Accrued and other liabilities	88	(25)
Deferred income taxes, net	(1,800)	(94)
Deferred net revenue (online-enabled games)	(454)	(375)
Net cash provided by operating activities	195	(6)
INVESTING ACTIVITIES
Capital expenditures	(72)	(63)
Proceeds from maturities and sales of short-term investments	793	446
Purchase of short-term investments	(1,984)	(1,029)
Acquisition, net of cash acquired	0	(58)
Net cash used in investing activities	(1,263)	(704)
FINANCING ACTIVITIES
Proceeds from issuance of common stock	33	36
Cash paid to taxing authorities for shares withheld from employees	(55)	(96)
Repurchase and retirement of common stock	(611)	(599)
Acquisition-related contingent consideration payment	(64)	0
Net cash used in financing activities	(697)	(659)
Effect of foreign exchange on cash and cash equivalents	(3)	(8)
Increase (decrease) in cash and cash equivalents	(1,768)	(1,377)
Beginning cash and cash equivalents	4,708	4,258
Ending cash and cash equivalents	2,940	2,881
Supplemental cash flow information:
Cash paid during the period for income taxes, net	77	78
Cash paid during the period for interest	21	21
Non-cash Investing activities
Change in accrued capital expenditures	$ (16)	$ (11)