Quarterly report pursuant to Section 13 or 15(d)

Contingencies (Detail)

v3.8.0.1
Contingencies (Detail)
$ / shares in Units, € in Billions, $ in Billions
 1 Months Ended
Sep. 30, 2017
USD ($)
Patent
Jul. 31, 2017
USD ($)
Patent
Jul. 31, 2015
Patent
Mar. 31, 2014
Patent
Jun. 30, 2012
$ / shares
May 31, 2009
USD ($)
May 31, 2009
EUR (€)
Aug. 19, 2010
$ / shares
Future Link Systems LLC [Member] | Settled Litigation [Member]                
Loss Contingencies [Line Items]                
Loss Contingency, Patents Allegedly Infringed, Number | Patent 3 14 15 9        
Loss Contingency, Damages Sought, Value | $ $ 2.9 $ 9.9            
McAfee, Inc. [Member] | McAfee Shareholder Litigation [Member]                
Loss Contingencies [Line Items]                
Loss Contingency, Cash Per Share of Acquiree Common Stock and Common Stock Subject to Restricted Stock Awards, Vested Restricted Stock Unit Awards, and Vested Performance Stock Unit Awards Upon Completion of Acquisition               $ 48.00
McAfee, Inc. [Member] | McAfee Shareholder Litigation [Member] | Pending Litigation [Member]                
Loss Contingencies [Line Items]                
Loss Contingency, Plaintiffs Damages Expert Value Assertion of Share of Acquiree for Purposes of Assessing Damages         $ 62.08      
EC Fine [Member]                
Loss Contingencies [Line Items]                
Loss Contingency, Damages Paid Value           $ 1.4 € 1.1