Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at December 31, 2011, Accumulated Other Comprehensive Loss	$ (707.0)
Current period change, Accumulated Other Comprehensive Loss	(82.0)	(102.0)	(19.8)
Balance at December 31, 2012, Accumulated Other Comprehensive Loss	(789.0)	(707.0)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax [Roll Forward]
Balance at December 31, 2011, Foreign Currency Translation Loss	(207.1)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	40.6	(27.7)	(13.1)
Balance at December 31, 2012, Foreign Currency Translation Loss	(166.5)	(207.1)
Accumulated Comprehensive Income (Loss), Unrecognized Pension & OPEB Costs [Roll Forward]
Balance at December 31, 2011, Unrecognized Pension & Other Postretirement Costs, net of tax	(501.3)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(119.8)	(75.9)	(7.0)
Balance at December 31, 2012, Unrecognized Pension & Other Postretirement Costs, net of tax		(501.3)
Accumulated Comprehensive Income (Loss), Derivatives [Roll Forward]
Balance at December 31, 2011, Derivative Hedging Loss, net of tax	1.4
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(2.8)	1.6	0.3
Balance at December 31, 2012, Derivative Hedging Loss, net of tax	(1.4)	1.4
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	42.1	(27.7)	(13.1)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	(156.4)	(112.4)	(37.3)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	(4.1)	2.6	0.3
Other Comprehensive Income (Loss), before Tax	(118.4)	(137.5)	(50.1)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	(1.5)	0	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	36.6	36.5	30.3
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	1.3	(1.0)	0
Other Comprehensive Income (Loss), Tax	$ 36.4	$ 35.5	$ 30.3