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Goodwill and Other Intangible Assets, Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details)
$ in Millions
Feb. 29, 2016
USD ($)
Estimated annual intangible assets amortization expense [Abstract]  
2016 $ 401
2017 358
2018 318
2019 289
2020 $ 254