Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ (208.2)		$ (200.9)		$ (150.3)
Unrealized gains (losses), net of tax	(4.1)	[1]	(1.5)	[1]	(8.3)	[1]
Amortization of pension related costs, net of tax	7.7	[2],[3],[4]	9.4	[2],[3],[4],[5]	3.6	[2],[3],[4]
Pension re-measurement, net of tax	53.3	[6]	(15.4)	[6]	(45.9)	[6]
Pension curtailment gain	0		0.2	[7]	0
Revaluation of derivative financial instruments, net of tax	1.5	[8],[9]	0	[8]	0	[8]
Ending Balance	(149.8)		(208.2)		(200.9)
Foreign Currency Translation
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	23.3		24.8		33.1
Unrealized gains (losses), net of tax	(4.1)		(1.5)		(8.3)
Amortization of pension related costs, net of tax	0	[4]	0	[4],[5]	0	[4]
Pension re-measurement, net of tax	0		0		0
Pension curtailment gain			0	[7]
Revaluation of derivative financial instruments, net of tax	0	[9]
Ending Balance	19.2		23.3		24.8
Actuarial (Loss) Gain on Post-retirement Benefits
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(231.5)		(225.6)		(183.2)
Unrealized gains (losses), net of tax	0		0		0
Amortization of pension related costs, net of tax	7.7	[4]	9.4	[4],[5]	3.5	[4]
Pension re-measurement, net of tax	53.3		(15.4)		(45.9)
Pension curtailment gain			0.1	[7]
Revaluation of derivative financial instruments, net of tax	0	[9]
Ending Balance	(170.5)		(231.5)		(225.6)
Prior Service Cost on Post-retirement Benefits
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	0		(0.1)		(0.2)
Unrealized gains (losses), net of tax	0		0		0
Amortization of pension related costs, net of tax	0	[4]	0	[4],[5]	0.1	[4]
Pension re-measurement, net of tax	0		0		0
Pension curtailment gain			0.1	[7]
Revaluation of derivative financial instruments, net of tax	0	[9]
Ending Balance	0		0		(0.1)
Deferred Gain - Hedging
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	0		0		0
Unrealized gains (losses), net of tax	0		0		0
Amortization of pension related costs, net of tax	0	[4]	0	[4],[5]	0	[4]
Pension re-measurement, net of tax	0		0		0
Pension curtailment gain			0	[7]
Revaluation of derivative financial instruments, net of tax	1.5	[9]
Ending Balance	$ 1.5		$ 0		$ 0

[1] Net of tax expense of $3.3 million, $1.0 million and $1.8 million for each year ended December 31, 2013, 2012 and 2011, respectively.

[2] This other comprehensive income component is included in the computation of net periodic benefit (income) costs. See Note 16, “Savings Plan, Pension and Post-Retirement Benefits,” for additional information regarding net periodic benefit (income) costs.

[3] Net of tax benefit of $(1.2) million, $(1.0) million and $(2.0) million for each year ended December 31, 2013. 2012 and 2011, respectively.

[4] Amounts represent the change in Accumulated Other Comprehensive Loss as a result of the amortization of unrecognized prior service costs and actuarial losses (gains) arising during each year related to the Company’s pension and other post-retirement plans. See Note 16, “Savings Plan, Pension and Post-retirement Benefits,” for further discussion of the Company’s pension and other post-retirement plans.

[5] Included in this amount is a $2.0 million reclassification adjustment recorded in the first quarter of 2012 related to deferred taxes on the amortization of actuarial losses.

[6] Net of tax (benefit) expense of $(33.5) million, $7.2 million and $30.1 million for each year ended December 31, 2013, 2012 and 2011, respectively.

[7] 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.

[8] Net of tax benefit of $(1.0) million for the year ended December 31, 2013.

[9] For the period ended December 31, 2013, the 2013 Interest Rate Swap was deemed effective and therefore, the changes in fair value related to the 2013 Interest Rate Swap are recorded in Other Comprehensive Income See Note 13, "Financial Instruments" for further discussion of the 2013 Interest Rate Swap.