Segment Information - Revenue and Long-Lived Assets by Geographic Region (Detail) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues		$ 2,080	$ 1,978	$ 2,116	$ 1,965	$ 2,226	$ 1,891	$ 2,161	$ 2,014	$ 8,139	$ 8,292	$ 8,524
Total long-lived assets		2,066				2,801				2,066	2,801
U.S. and Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues	[1]									3,880	3,920	3,808
Total long-lived assets		960				1,058				960	1,058
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues	[2]									1,671	1,873	1,982
Total long-lived assets		560				939				560	939
Australasia and Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues	[3]									2,588	2,499	$ 2,734
Total long-lived assets		$ 546				$ 804				$ 546	$ 804

[1] Revenues include approximately $3.7 billion for fiscal 2017, $3.8 billion for fiscal 2016 and $3.6 billion for fiscal 2015 from customers in the U.S.

[2] Revenues include approximately $1.3 billion for fiscal 2017, $1.5 billion for fiscal 2016 and $1.6 billion for fiscal 2015 from customers in the U.K.

[3] Revenues include approximately $2.3 billion for fiscal 2017, $2.3 billion for fiscal 2016 and $2.3 billion for fiscal 2015 from customers in Australia.