Additional Financial Information - Components of Other, Net Included in Statements of Operations (Parenthetical) (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Components of Other Income (Expense) [Line Items]
Gain on sale of REA Group's European business	[1]	$ 120	$ 0	$ 120	$ 0
REA Group [Member]
Components of Other Income (Expense) [Line Items]
Gain on sale of REA Group's European business		$ 120		$ 120

[1] The Company recorded a $120 million gain resulting from the sale of REA Group's European business. See Note 2-Acquisitions, Disposals and Other Transactions.