Redeemable Noncontrolling Interests (Changes in Redeemable Noncontrolling Interests) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance at beginning of period	$ 117
Net purchase of redeemable noncontrolling interests	(1)	$ (7)
Balance at end of period	118	117
naviHealth
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance at beginning of period	117	0
Redeemable noncontrolling interests acquired		119
Net earnings attributable to redeemable noncontrolling interests	4	1
Net purchase of redeemable noncontrolling interests	(3)	(3)
Balance at end of period	$ 118	$ 117