v3.7.0.1
Summary of Severance, Acquisition and Integration Related Charges Related to Acquisition (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Business Acquisition [Line Items]    
Integration costs $ 152 $ 152
Yahoo! Inc.    
Business Acquisition [Line Items]    
Severance 370 370
Transaction costs 66 66
Integration costs 56 56
Acquisition and Integration Related Charges $ 492 $ 492