Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Schedule of Change in Fair Value of Foreign Currency Forward Exchange Contracts Under Hedge Designations

The activity, net of tax, in accumulated other comprehensive loss related to foreign currency forward exchange contracts for the years ended December 31, 2017, 2016 and 2015 was as follows:

(In millions)	2017			2016			2015
Unrealized losses at beginning of period, net of tax	$	(25.9	)	$	(15.0	)	$	(9.2	)
Losses reclassified to net sales		8.9			14.4			11.8
Increase (decrease) in fair value		25.6			(25.3	)		(17.6	)
Unrealized gains (losses) at end of period, net of taxes	$	8.6		$	(25.9	)	$	(15.0	)