Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization expense	$ 2,200	$ 1,700	$ 978
Amortization of capitalized software	$ 54	$ 55	69
Devices
Finite-Lived Intangible Assets [Line Items]
Impairment charges of intangible assets			$ 480