Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES
Net income	$ 1,019	$ 1,043	$ 967
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion	145	136	172
Acquisition-related contingent consideration	14	0	0
Stock-based compensation	284	242	196
Change in assets and liabilities:
Receivables, net	(88)	(25)	(136)
Other assets	(24)	10	3
Accounts payable	59	(44)	5
Accrued and other liabilities	3	43	190
Deferred income taxes, net	(16)	204	100
Deferred net revenue (online-enabled games)	151	83	81
Net cash provided by operating activities	1,547	1,692	1,578
INVESTING ACTIVITIES
Capital expenditures	(119)	(107)	(123)
Proceeds from maturities and sales of short-term investments	1,688	3,166	1,281
Purchase of short-term investments	(1,342)	(2,287)	(1,917)
Acquisition, net of cash acquired	(58)	(150)	0
Net cash provided by (used in) investing activities	169	622	(759)
FINANCING ACTIVITIES
Payment of convertible notes	0	0	(163)
Proceeds from issuance of common stock	61	78	72
Cash paid to taxing authorities for shares withheld from employees	(122)	(120)	(130)
Repurchase and retirement of common stock	(1,192)	(601)	(508)
Net cash used in financing activities	(1,253)	(643)	(729)
Effect of foreign exchange on cash and cash equivalents	(13)	22	(18)
Increase in cash and cash equivalents	450	1,693	72
Beginning cash and cash equivalents	4,258	2,565	2,493
Ending cash and cash equivalents	4,708	4,258	2,565
Supplemental cash flow information:
Cash paid during the year for income taxes, net	100	57	51
Cash paid during the year for interest	$ 42	$ 42	$ 43