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Derivative Instruments - Narrative (Details) - Foreign currency forward exchange contracts and other - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Notional amount $ 903.1 $ 742.0 $ 832.4
Maximum      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative term of contracts 18 months