Pension and Other Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Assets and liabilities [Abstract]
Liability - current	$ (0.8)	$ (0.8)
Liability - long term	(20.0)	(37.1)
Accumulated other comprehesive income [Abstract]
Prior service cost (credit)	1.1	0.8
Net actuarial loss (gain)	22.8	41.7
Other Postretirement Benefit Plans, Defined Benefit [Member]
Assets and liabilities [Abstract]
Liability - current	0	(0.2)
Liability - long term	(0.3)	0
Accumulated other comprehesive income [Abstract]
Prior service cost (credit)	0	(2.1)
Net actuarial loss (gain)	$ 0	$ (12.8)