Finite-Lived Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2018		Jun. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 17,040	[1]	$ 15,936
Accumulated Amortization	(8,558)		(7,883)
Net Carrying Amount	8,482		8,053
Technology-based
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,548		7,220
Accumulated Amortization	(5,383)		(5,018)
Net Carrying Amount	2,165		2,202
Customer-related
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,741		4,031
Accumulated Amortization	(1,487)		(1,205)
Net Carrying Amount	3,254		2,826
Marketing-related
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,177		4,006
Accumulated Amortization	(1,197)		(1,071)
Net Carrying Amount	2,980		2,935
Contract-based
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	574		679
Accumulated Amortization	(491)		(589)
Net Carrying Amount	$ 83		$ 90

[1] Includes intangible assets of $1.3 billion related to GitHub. See Note 7 – Business Combinations for further information.