Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
OPERATING ACTIVITIES
Net income	$ 3,039	$ 1,019	$ 1,043
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	150	145	136
Acquisition-related contingent consideration	5	14	0
Stock-based compensation	347	284	242
Change in assets and liabilities:
Receivables, net	164	(88)	(25)
Other assets	35	(24)	10
Accounts payable	(36)	59	(44)
Accrued and other liabilities	119	3	43
Deferred income taxes, net	(1,871)	(16)	204
Deferred net revenue (online-enabled games)	(155)	151	83
Net cash provided by operating activities	1,797	1,547	1,692
INVESTING ACTIVITIES
Capital expenditures	(140)	(119)	(107)
Proceeds from maturities and sales of short-term investments	2,142	1,688	3,166
Purchase of short-term investments	(3,359)	(1,342)	(2,287)
Acquisition, net of cash acquired	0	(58)	(150)
Net cash provided by (used in) investing activities	(1,357)	169	622
FINANCING ACTIVITIES
Proceeds from issuance of common stock	62	61	78
Cash paid to taxing authorities for shares withheld from employees	(91)	(122)	(120)
Repurchase and retirement of common stock	(1,207)	(1,192)	(601)
Payment for Contingent Consideration Liability, Financing Activities	(122)	0	0
Net cash used in financing activities	(1,358)	(1,253)	(643)
Effect of foreign exchange on cash and cash equivalents	(22)	(13)	22
Increase in cash and cash equivalents	(940)	450	1,693
Beginning cash and cash equivalents	4,708	4,258	2,565
Ending cash and cash equivalents	3,768	4,708	4,258
Supplemental cash flow information:
Cash paid during the year for income taxes, net	170	100	57
Cash paid during the year for interest	$ 42	$ 42	$ 42