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Accounting for Derivative Instruments and Hedging Activities (Tables)
12 Months Ended
Dec. 31, 2018
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)
 
 
 
 
 
 
 
 
Instrument
 
Derivative Category
 
Unit of Measure
 
December 31,
2018
 
December 31,
2017
Foreign currency derivatives
 
Foreign Currency
 
US Dollars
 
2,091.7

 
813.5

Interest rate derivatives
 
Interest Rate
 
US Dollars
 
585.0

 
585.0

Natural gas derivatives
 
Commodity
 
MMbtu
 
52.2

 
43.0