Royalties And Licenses (Schedule Of Royalty-Related Assets) (Details) - USD ($) $ in Millions |
Dec. 31, 2017 |
Mar. 31, 2017 |
---|---|---|
Royalties and Licenses | ||
Royalty-related assets | $ 54 | $ 118 |
Other Current Assets | ||
Royalties and Licenses | ||
Royalty-related assets | 20 | 79 |
Other assets | ||
Royalties and Licenses | ||
Royalty-related assets | $ 34 | $ 39 |