Balance Sheet Details (Deferred Net Revenue) (Details) - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current	$ 1,498		$ 1,901	[1]
Deferred revenue, revenue recognized	1,762	$ 1,951
Deferred net revenue (online-enabled games)
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current	1,498		1,901
Deferred net revenue (other)
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current	78		103
Deferred net revenue (noncurrent)
Deferred Revenue Arrangement [Line Items]
Deferred revenue, noncurrent	97		67
Total deferred net revenue
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 1,673		$ 2,071

[1] Derived from audited Consolidated Financial Statements.