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Subsequent Events - Additional Information (Detail)
$ / shares in Units, $ in Thousands, € in Millions, shares in Millions
9 Months Ended
Nov. 01, 2019
USD ($)
$ / shares
shares
Nov. 01, 2019
EUR (€)
shares
Sep. 30, 2019
USD ($)
Subsequent Event [Line Items]      
Business combination, consideration transferred     $ 311,473
Subsequent Event      
Subsequent Event [Line Items]      
Unsecured long-term debt, noncurrent $ 500,000    
Long-term debt, maturities, repayments of principal in year three, percentage 5.00%    
Long-term debt, maturing in years four and five, percentage 10.00%    
Livermore Software Technology Corporation | Subsequent Event      
Subsequent Event [Line Items]      
Percentage of shares acquired 100.00%    
Business combination, consideration transferred $ 779,900    
Payments to acquire businesses, gross $ 472,700    
Business acquisition, equity interest issued or issuable, number of shares | shares 1.4 1.4  
Business acquisition, share price | $ / shares $ 220.74    
Business combination, consideration transferred, equity interests issued and issuable $ 307,200    
Dynardo | Subsequent Event      
Subsequent Event [Line Items]      
Percentage of shares acquired 100.00%    
Payments to acquire businesses, gross | €   € 30.0