Income Taxes (Schedule of Components of Income Tax Expense (Benefit), Current and Deferred) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Current:
Federal	$ 659	$ 295	$ 341
State and local	154	89	41
Non-U.S.	69	85	143
Total current	882	469	525
Deferred:
Federal	(822)	(28)	(1,003)
State and local	(127)	(37)	16
Non-U.S.	(12)	(18)	(25)
Total deferred	(961)	(83)	(1,012)
Provision for/(benefit from) income taxes	$ (79)	$ 386	$ (487)