Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Quarterly Information (Unaudited) (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Quarterly Financial Information [Line Items]
Provision (benefit) for income taxes				$ 19,903	$ 4,412	$ 5,100
Decrease in operating income due to restructuring			$ 306
Decrease in net income due to restructuring			$ 243
Decrease in diluted earnings per share due to restructuring			$ 0.04
Sales and Marketing Restructuring Plan \| Severance
Quarterly Financial Information [Line Items]
Restructuring charges			$ 306
Tax Cuts and Jobs Act
Quarterly Financial Information [Line Items]
Provision (benefit) for income taxes	$ (104)	$ 13,800		$ 13,700
Decrease (increase) in diluted earnings per share	$ (0.01)	$ 1.78		$ 1.75