Goodwill And Acquisition-Related Intangibles, Net (Schedule Of Acquisition-Related Intangibles) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Mar. 31, 2021
Finite-Lived Intangible Assets
Gross carrying amount	$ 1,663		$ 1,015
Accumulated amortization	(754)		(706)
Acquisition-related intangibles, net	$ 909		309	[1]
Weighted Average
Finite-Lived Intangible Assets
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	4 years 10 months 24 days	3 years 6 months
Weighted Average | Glu Mobile Inc. [Member]
Finite-Lived Intangible Assets
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years 7 months 6 days
Developed And Core Technology
Finite-Lived Intangible Assets
Gross carrying amount	$ 989		691
Accumulated amortization	(507)		(472)
Acquisition-related intangibles, net	482		219
Trade Names And Trademarks
Finite-Lived Intangible Assets
Gross carrying amount	436		188
Accumulated amortization	(155)		(144)
Acquisition-related intangibles, net	281		44
Registered User Base And Other Intangibles
Finite-Lived Intangible Assets
Gross carrying amount	18		5
Accumulated amortization	(7)		(5)
Acquisition-related intangibles, net	11		0
Carrier Contracts And Related
Finite-Lived Intangible Assets
Gross carrying amount	85		85
Accumulated amortization	(85)		(85)
Acquisition-related intangibles, net	0		0
In Process Research and Development [Member]
Finite-Lived Intangible Assets
Gross carrying amount	135		46
Accumulated amortization	0		0
Acquisition-related intangibles, net	$ 135		$ 46

[1] Derived from audited Consolidated Financial Statements.