Income Taxes (Schedule of Components of Income Tax Expense (Benefit), Current and Deferred) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Current:
Federal	$ 273	$ 633	$ 424
State and local	10	52	83
Non-U.S.	56	73	29
Total current	339	758	536
Deferred:
Federal	258	96	196
State and local	37	12	24
Non-U.S.	(4)	(21)	(1)
Total deferred	291	87	219
Provision for income taxes	$ 630	$ 845	$ 755