Segment Information - Revenue and Long-Lived Assets by Geographic Region (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 8,292	$ 8,524	$ 8,486
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	3,800	3,600	3,500
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	2,300	2,300	2,600
U.K. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 1,500	$ 1,600	$ 1,800