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Goodwill and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details)
$ in Millions
Feb. 28, 2017
USD ($)
Estimated annual intangible assets amortization expense [Abstract]  
2017 $ 357
2018 326
2019 295
2020 236
2021 $ 194