Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Current Taxes
U.S. federal	$ 19,764	$ 2,739	$ 545
U.S. state and local	934	30	136
Foreign	4,348	2,472	1,940
Current taxes	25,046	5,241	2,621
Deferred Taxes
U.S. federal	(4,292)	(554)	1,919
U.S. state and local	(458)	269	111
Foreign	(393)	(544)	449
Deferred taxes	(5,143)	(829)	2,479
Provision for income taxes	$ 19,903	$ 4,412	$ 5,100