Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization expense	$ 249	$ 361	$ 740	$ 1,100
Amortization of capitalized software	18	$ 13	55	$ 68
Gross Carrying Amount	9,751		9,751		$ 9,552
Accumulated Amortization	$ (5,292)		$ (5,292)		(4,717)
Restatement Adjustment
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount					(585)
Accumulated Amortization					$ 585