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Derivatives and Financial Instruments - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2021
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Derivative [Line Items]        
Payments upon the maturity of cross currency swaps   $ 14.7 $ 0.0  
Foreign Exchange Contract [Member]        
Derivative [Line Items]        
Derivative, Notional Amount   10.6   $ 12.4
Currency Swap [Member]        
Derivative [Line Items]        
Derivative, Notional Amount   834.8   $ 855.1
Loss on derivative hedge $ 32.8 $ 20.3