Balance Sheet Details (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	[1]
Remaining Performance Obligations
Depreciation expense	$ 44	$ 40
Deferred Revenue, Current	1,548		$ 2,024
Deferred Revenue, Revenue Recognized	1,240	$ 961
Unsatisfied Performance Obligations [Member]
Remaining Performance Obligations
Revenue, Remaining Performance Obligation, Amount	33
Recognized Revenue
Remaining Performance Obligations
Revenue, Remaining Performance Obligation, Amount	$ 25

[1] Derived from audited Consolidated Financial Statements.