Additional Financial Information - Components of Other, Net (Detail) - 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]
Write-down of available-for-sale securities	[1]	$ (3)	$ 0	$ (33)	$ (21)
Gain on sale of other businesses		0	0	0	11
Gain on sale of equity method investments		0	0	0	17
Other, net		0	0	7	13
Total Other, net		29	(13)	6	127
SEEK Asia Limited [Member]
Components of Other Income (Expense) [Line Items]
Gain on sale business	[2]	32	0	32	0
REA Group [Member]
Components of Other Income (Expense) [Line Items]
Gain on sale business		$ 0	$ (13)	$ 0	$ 107

[1] For the three and nine months ended March 31, 2018 and for the nine months ended March 31, 2017, the write-downs of available-for-sale securities were reclassified out of accumulated other comprehensive loss and included in Other, net in the Statement of Operations.

[2] 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.