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Royalties And Licenses (Schedule Of Royalty-Related Assets) (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Mar. 31, 2022
Royalties and Licenses    
Royalty-related assets $ 102 $ 63
Other Current Assets    
Royalties and Licenses    
Royalty-related assets 72 35
Other assets    
Royalties and Licenses    
Royalty-related assets $ 30 $ 28