Major Classes of Assets and Liabilities to Which We Have Preliminarily Allocated the Purchase Price (Parenthetical) (Detail) - USD ($)	Mar. 31, 2017	Dec. 08, 2016	Jun. 30, 2016
Business Acquisition [Line Items]
Business combination, long-term debt	$ 77,550,000,000		$ 40,949,000,000
LinkedIn Corporation
Business Acquisition [Line Items]
Goodwill expected to be deductible for income tax purposes		$ 0
Business combination, long-term debt	$ 18,000,000