Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Deferred Income Tax Assets
Stock-based compensation expense	$ 460	$ 777
Accruals, reserves, and other expenses	1,832	1,859
Loss and credit carryforwards	3,369	4,809
Depreciation and amortization	351	53
Other	56	255
Deferred income tax assets	6,068	7,753
Less valuation allowance	(3,186)	(3,310)
Deferred income tax assets, net of valuation allowance	2,882	4,443
Deferred Income Tax Liabilities
Foreign earnings	0	(1,134)
Unrealized gain on investments and debt	0	(1,384)
Unearned revenue	(639)	(5,760)
Depreciation and amortization	(1,103)	(1,630)
Other	(312)	(21)
Deferred income tax liabilities	(2,054)	(9,929)
Net deferred income tax assets	828
Long-term deferred income tax liabilities	(541)	(5,734)
Net deferred income tax liabilities		(5,486)
Other Long-term Assets
Deferred Income Tax Liabilities
Other long-term assets	1,369	248
Long-term Deferred Income Tax Liabilities
Deferred Income Tax Liabilities
Long-term deferred income tax liabilities	$ (541)	$ (5,734)