Annual report pursuant to Section 13 and 15(d)

Goodwill (Detail)

v3.6.0.2
Goodwill (Detail)
12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Oct. 02, 2016
reporting_unit
Goodwill and Intangible Assets Disclosure [Abstract]        
Number of reporting units have goodwill and subject to goodwill impairment test | reporting_unit       8
Goodwill impairment charge | $ $ 0 $ 0 $ 0