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Balance Sheet Details (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Mar. 31, 2022
[1]
Remaining Performance Obligations          
Depreciation expense $ 45 $ 39 $ 89 $ 79  
Deferred Revenue, Current 1,391   1,391   $ 2,024
Deferred Revenue, Revenue Recognized     1,951 $ 1,504  
Unsatisfied Performance Obligations [Member]          
Remaining Performance Obligations          
Revenue, Remaining Performance Obligation, Amount $ 34   $ 34    
[1] Derived from audited Consolidated Financial Statements.