Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization expense	$ 249	$ 329	$ 491	$ 701
Amortization of capitalized software	$ 18	$ 15	$ 36	$ 55