Fair Value Of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table sets forth our financial assets and liabilities that were accounted for at fair value on a recurring basis as of December 31, 2017 and 2016:

(in millions of dollars)	December 31, 2017		December 31, 2016
Assets:
Forward currency contracts	$	25.1	$	4.4
Liabilities:
Forward currency contracts	25.4		0.3