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Accounting for Derivative Instruments and Hedging Activities (Tables)
12 Months Ended
Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule Of Derivative Instruments Notional Amounts The following is the total absolute notional volume associated with our outstanding derivative instruments:
(in millions of Units)
InstrumentDerivative CategoryUnit of MeasureDecember 31,
2020
December 31,
2019
Foreign currency derivativesForeign CurrencyUS Dollars2,912.3 1,923.3 
Interest rate derivativesInterest RateUS Dollars— 585.0 
Natural gas derivativesCommodityMMbtu27.3 44.1