Additional Financial Information - Components of Other, Net (Parenthetical) (Detail) - SEEK Asia Limited [Member] - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Components of Other Income (Expense) [Line Items]
Sale price of business in cash		$ 122
Gain on sale of investment	[1]	$ 32	$ 0	$ 32	$ 0

[1] During the three months ended March 31, 2018, the Company sold its investment in SEEKAsia for $122 million in cash and recognized a $32 million gain in Other, net.