CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME (UNAUDITED) (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Currency translation adjustment, tax	$ 3.3	$ 1.0	$ 1.8
Amortization of pension related costs, tax benefit	(1.2)	(1.0)	(2.0)
Pension re-measurement, tax	(33.5)	7.2	30.1
Revaluation of derivative financial instruments, tax	$ (1.0)