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Debt - British Pound Sterling Term Loan - Additional Information (Detail) - Term Loan [Member] - Bank of America, N.A - British Pound Sterling [Member] - EUR (€)
Mar. 04, 2020
Jan. 06, 2020
Jun. 30, 2020
Debt Instrument [Line Items]      
Maximum borrowing capacity   € 700,000,000  
Debt instrument maturity date   Jan. 15, 2025  
Debt instrument effective date Mar. 06, 2020    
Effective interest rate 0.70%    
Senior unsecured notes, interest rate     1.95%
Minimum [Member]      
Debt Instrument [Line Items]      
Applicable margin adjustable based on pricing grid, percentage   0.85%  
Maximum [Member]      
Debt Instrument [Line Items]      
Applicable margin adjustable based on pricing grid, percentage   1.65%  
Credit Rating      
Debt Instrument [Line Items]      
Variable interest rate     1.25%