Financial Instruments (Policies)

12 Months Ended

Dec. 31, 2017

Financial Instruments [Abstract]

Financial Instruments

Derivatives Not Designated as Hedging Instruments

Both the gain or loss on the derivatives not designated as hedging instruments and the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings.  Realized gains or losses and changes in the estimated fair value of foreign currency forward contracts that have not been designated as hedges were a net gain of $0.1 million during the year ended December 31, 2017. A net loss of $0.3 million was recognized during the year ended December 31, 2016.  Gains and losses on these contracts are recorded in net other income (expense) and net interest expense in the Consolidated Statements of Operations and are offset by losses and gains on the related hedged items.