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Derivative Financial Instruments (Narrative) (Details) - Foreign exchange contracts - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Derivatives not designated as hedging instruments    
Derivative [Line Items]    
U.S. dollar equivalent notional value $ 154.1 $ 164.7
Cash Flow Hedging | Derivatives designated as hedging instruments    
Derivative [Line Items]    
U.S. dollar equivalent notional value $ 164.2 $ 134.3