Consolidated Balance Sheets - USD ($) shares in Millions, $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Assets, Current [Abstract]
Cash and cash equivalents	$ 5,260	$ 3,768
Short-term investments	1,106	1,967
Receivables, net	521	461
Other current assets	326	321
Total current assets	7,213	6,517
Property and equipment, net	491	449
Goodwill	2,868	1,885
Acquisition-related intangibles, net	309	53
Deferred income taxes, net	2,045	1,903
Other assets	362	305
TOTAL ASSETS	13,288	11,112
Liabilities, Current [Abstract]
Accounts payable	96	68
Accrued and other current liabilities	1,341	1,052
Deferred net revenue (online-enabled games)	1,527	945
Senior Notes, Current	0	599
Total current liabilities	2,964	2,664
Senior notes, net	1,876	397
Income tax obligations	315	373
Deferred income taxes, net	43	1
Other liabilities	250	216
TOTAL LIABILITIES	5,448	3,651
Commitments and contingencies (See Note 14)
Stockholders' equity:
Preferred stock, $0.01 par value. 10 shares authorized	0	0
Common stock, $0.01 par value. 1,000 shares authorized; 286 and 288 shares issued and outstanding, respectively	3	3
Additional paid-in capital	0	0
Retained earnings	7,887	7,508
Accumulated other comprehensive loss	(50)	(50)
Total stockholders' equity	7,840	7,461
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 13,288	$ 11,112
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10	10
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000	1,000
Common stock, shares issued	286	288
Common stock, shares outstanding	286	288