Additional Financial Information - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized holding gains (losses) on securities, income tax (benefit) expense	$ (10)	$ 0	$ 0
Pension plans, income tax expense (benefit)	8	(14)	(11)
Foreign currency translation adjustments, fiscal year activity	84	(398)	(1,183)
Share of other comprehensive income from equity affiliates, net, income tax expense (benefit)	2	(7)	1
Noncontrolling Interests [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, fiscal year activity	$ 9	$ (1)	$ (24)