Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization expense	$ 315	$ 249	$ 529	$ 491
Amortization of capitalized software	$ 14	$ 18	$ 28	$ 36