Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Detail)

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Acquisitions (Detail) - Armstrong Aerospace, Inc. - USD ($)
$ in Millions
9 Months Ended
Jan. 14, 2015
Oct. 01, 2016
Business Acquisition    
Date of acquisition   Jan. 14, 2015
Percentage of acquired stock 100.00%  
Business acquisition purchase price paid in cash $ 52.6  
Goodwill and purchased intangible assets deductible for tax purposes period (in years) 15 years