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Revenue Classified by Major Geographic Areas (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues $ 51,728 $ 43,076 $ 97,045 $ 80,230
United States        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues [1] 26,463 21,836 49,293 40,861
Other Countries        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues $ 25,265 $ 21,240 $ 47,752 $ 39,369
[1] Includes billings to OEMs and certain multinational organizations because of the nature of these businesses and the impracticability of determining the geographic source of the revenue.