Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Current Taxes
U.S. federal	$ 4,718	$ 19,764	$ 2,739
U.S. state and local	662	934	30
Foreign	5,531	4,348	2,472
Current taxes	10,911	25,046	5,241
Deferred Taxes
U.S. federal	(5,647)	(4,292)	(554)
U.S. state and local	(1,010)	(458)	269
Foreign	194	(393)	(544)
Deferred taxes	(6,463)	(5,143)	(829)
Provision for income taxes	$ 4,448	$ 19,903	$ 4,412