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Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization of Intangible Assets $ 395 $ 355 $ 191
Estimated annual amortization of intangible assets - 2018 370    
Estimated annual amortization of intangible assets - 2019 301    
Estimated annual amortization of intangible assets - 2020 270    
Estimated annual amortization of intangible assets - 2021 219    
Estimated annual amortization of intangible assets - 2022 $ 195