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Acquisition and Divestiture - Additional Information (Detail)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
USD ($)
Business Acquisition [Line Items]  
Purchases of businesses, net of cash acquired $ 116,605
Gain (Loss) On Disposition Of Business 141,020
2020 Consolidated Acquisition [Member]  
Business Acquisition [Line Items]  
Purchases of businesses, net of cash acquired 116,600
Total other intangible assets acquired 58,700
Finite-lived intangible assets acquired 50,600
Future amortization expense, year one 3,000
2020 Consolidated Acquisition [Member] | Trade Names [Member]  
Business Acquisition [Line Items]  
Indefinite-lived intangible trade names acquired 8,100
2020 Consolidated Acquisition [Member] | Customer Relationship [Member]  
Business Acquisition [Line Items]  
Finite-lived intangible assets acquired $ 41,400
Amortization period for finite-lived intangible asset 18 years
2020 Consolidated Acquisition [Member] | Purchased Technology [Member]  
Business Acquisition [Line Items]  
Finite-lived intangible assets acquired $ 9,200
Amortization period for finite-lived intangible asset 18 years
Kymera International [Member]  
Business Acquisition [Line Items]  
Business Combination, Consideration Transferred $ 245,300
Income Tax Expense Relating To Sale Of Business 31,400
Kymera International [Member] | Other Income [Member]  
Business Acquisition [Line Items]  
Gain (Loss) On Disposition Of Business $ 141,000