Quarterly Information (Unaudited) (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Jun. 30, 2018		Mar. 31, 2018		Dec. 31, 2017		Sep. 30, 2017		Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2018		Jun. 30, 2017	[1]	Jun. 30, 2016
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 30,085		$ 26,819		$ 28,918		$ 24,538		$ 25,605		$ 23,212		$ 25,826		$ 21,928		$ 110,360		$ 96,571		$ 91,154
Gross margin	20,343		17,550		17,854		16,260		17,149		15,152		15,925		14,084		72,007		62,310		58,374
Operating income	10,379		8,292		8,679		7,708		7,682	[2]	6,723		7,905		6,715		35,058		29,025	[2]	26,078
Net income (loss)	$ 8,873	[3]	$ 7,424	[3]	$ (6,302)	[3]	$ 6,576	[3]	$ 8,069	[2]	$ 5,486		$ 6,267		$ 5,667		$ 16,571	[3]	$ 25,489	[2]	$ 20,539
Basic earnings (loss) per share	$ 1.15		$ 0.96		$ (0.82)		$ 0.85		$ 1.05		$ 0.71		$ 0.81		$ 0.73		$ 2.15		$ 3.29		$ 2.59
Diluted earnings (loss) per share	$ 1.14	[4]	$ 0.95	[4]	$ (0.82)	[4]	$ 0.84	[4]	$ 1.03	[2]	$ 0.70		$ 0.80		$ 0.72		$ 2.13	[4]	$ 3.25	[2]	$ 2.56

[1] On December 8, 2016, we acquired LinkedIn Corporation. LinkedIn has been included in our consolidated results of operations starting on the acquisition date.

[2] Includes $306 million of employee severance expenses primarily related to our sales and marketing restructuring plan, which decreased operating income, net income, and diluted EPS by $306 million, $243 million, and $0.04, respectively.

[3] Reflects the net charge (benefit) related to the TCJA of $13.8 billion for the second quarter, $(104) million for the fourth quarter, and $13.7 billion for fiscal year 2018.

[4] Reflects the net charge (benefit) related to the TCJA, which decreased (increased) diluted EPS $1.78 for the second quarter, $(0.01) for the fourth quarter, and $1.75 for fiscal year 2018.