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Revenue Classified by Significant Product and Service Offerings (Parenthetical) (Detail) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Revenue from External Customer [Line Items]    
Revenue $ 37,154 $ 33,055
Commercial Cloud    
Revenue from External Customer [Line Items]    
Revenue $ 15,200 $ 11,600