Additional Financial Information - Components of Other, Net Included in Statements of Operations (Parenthetical) (Detail) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
		Aug. 31, 2014	Dec. 31, 2016	Jun. 30, 2017		Jun. 30, 2016		Jun. 30, 2015
Components of Other Income (Expense) [Line Items]
Gain on sale of marketable securities	[1]			$ 7		$ 1		$ 29
REA Group [Member]
Components of Other Income (Expense) [Line Items]
Gain on sale of business			$ 120	$ 107	[2]	$ 0	[2]	0	[2]
Cash consideration on sale of marketable securities		$ 104
Gain on sale of marketable securities								$ 29

[1] In August 2014, REA Group completed the sale of a minority interest held in marketable securities for total cash consideration of $104 million. As a result of the sale, REA Group recognized a pre-tax gain of $29 million, which was reclassified out of accumulated other comprehensive income and included in Other, net in the Statement of Operations.

[2] The Company recognized a pre-tax gain of $107 million for the fiscal year ended June 30, 2017 related to REA Group's sale of its European business. See Note 3-Acquisitions, Disposals and Other Transactions.