Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations - Additional Information (Detail)

v3.2.0.727
Discontinued Operations - Additional Information (Detail) - Fiber Optic Licensing Division [Member] - USD ($)
$ in Millions
3 Months Ended
Aug. 04, 2015
Sep. 30, 2015
Scenario Forecast [Member]    
Discontinued Operations [Line Items]    
Gain on sale, Net of tax   $ 175
Subsequent Event [Member]    
Discontinued Operations [Line Items]    
Sales price of fiber optic licensing operations $ 1,000  
Net cash proceeds from sale of fiber optic licensing operations $ 830