Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011	Mar. 31, 2012 Actuarial (Loss) Gain on Post-retirement Benefits	Dec. 31, 2012 Actuarial (Loss) Gain on Post-retirement Benefits		Dec. 31, 2012 Prior Service Cost on Post-retirement Benefits		Dec. 31, 2012 Foreign Currency Translation
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)
Reclassification of tax effect on amortization of actuarial losses to deferred taxes					2.0
Curtailment gain		1.7
Pension curtailment gain	0	0.2	[1]	0		0.1	[1]	0.1	[1]	0	[1]
Curtailment gain		$ 1.5

[1] As a result of the September 2012 Program, the Company recognized a curtailment gain of $1.7 million, partially offset by $0.1 million of accumulated actuarial losses and $0.1 million of prior service costs previously reported within Accumulated Other Comprehensive Loss, for a net gain of $1.5 million, which was recorded within restructuring charges for the year ended December 31, 2012. See Note 16, “Savings Plan, Pension and Post-retirement Benefits,” for further discussion of the Company’s pension and other post-retirement plans.