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Debt (Schedule Of Long-Term Debt For Each Of The Next Five Years And Thereafter) (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Apr. 01, 2016
Debt Disclosure [Abstract]    
2018 $ 1,310  
2019 0  
2020 2,000  
2021 1,260  
2022 2,240  
Thereafter 1,500  
Total future maturities of debt $ 8,310 $ 2,250