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Royalties And Licenses (Schedule Of Royalty-Related Liabilities) (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Mar. 31, 2022
Royalty Related Liabilities    
Royalty-related liabilities $ 141 $ 206
Accrued royalties    
Royalty Related Liabilities    
Royalty-related liabilities 141 203
Other liabilities    
Royalty Related Liabilities    
Royalty-related liabilities $ 0 $ 3