Fair Value Measurements (Reconciliation of Liabilities Measured at Fair Value on a Recurring Basis Using Unobservable Inputs (Level 3)) (Details) - Recurring - Contingent Consideration Obligation - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 19	$ 53
Additions from acquisitions	21	7
Changes in fair value of contingent consideration	(5)	(16)
Payment of contingent consideration	3	25
Balance at end of period	$ 32	$ 19