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Postretirement and Other Benefits - Additional Information (Details)
$ in Millions
Mar. 31, 2021
USD ($)
U.S.  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Amortization of accumulated other comprehensive loss related to benefit plans $ 3.6
French  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Amortization of accumulated other comprehensive loss related to benefit plans $ 1.0