Stockholders' Equity (Accumulated Other Comprehensive Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended				12 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011		Dec. 31, 2011
Stockholders' Equity Note [Abstract]
Accumulated Other Comprehensive Loss, Foreign Currency Translation, Beginning Balance					$ (102.8)		$ (51.7)		$ (51.7)
Other comprehensive income (loss), Foreign Currency Translation	(57.3)	[1]	20.1	[1]	(33.7)	[1]	42.1	[1]	(51.1)
Accumulated Other Comprehensive Loss, Foreign Currency Translation, Ending Balance	(136.5)				(136.5)				(102.8)
Accumulated Other Comprehensive Loss, Unrealized Gains on Hedging, Beginning Balance					(16.7)		6.1		6.1
Other comprehensive income (loss), Unrealized Gains on Hedging	(6.7)	[2]	2.7	[2]	5.6	[2]	19.3	[2]	(22.8)
Accumulated Other Comprehensive Loss, Unrealized Gains on Hedging, Ending Balance	(11.1)				(11.1)				(16.7)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax					(324.3)		(206.5)		(206.5)
Other comprehensive income (loss), Defined Pension and Other Post Retirement Benefits	5.2	[3]	2.7	[3]	9.8	[3]	5.1	[3]	(117.8)
Accumulated Other Comprehensive Loss, Defined Pension and Other Post-Retirement Benefits, Ending Balance	(314.5)				(314.5)				(324.3)
Accumulated Other Comprehensive Loss, Beginning Balance					(443.8)		(252.1)		(252.1)
Other comprehensive income (loss), Accumulated Other Comprehensive Loss					(18.3)				(191.7)
Accumulated Other Comprehensive Loss, Ending Balance	$ (462.1)				$ (462.1)				$ (443.8)

[1] Net of income tax (expense) benefit of $1.3 and $(1.9) for the three months ended June 30, 2012 and 2011, respectively, and $0.9 and $(6.7) for the six months ended June 30, 2012 and 2011 respectively.

[2] Net of income tax (expense) benefit of $2.6 and $(1.4) for the three months ended June 30, 2012 and 2011, respectively, and $(4.2) and $(11.0) for the six months ended June 30, 2012 and 2011, respectively.

[3] Net of income tax (expense) benefit of $(2.8) and $(1.4) for the three months ended June 30, 2012 and 2011, respectively, and $(5.2) and $(2.7) for the six months ended June 30, 2012 and June 30, 2011, respectively.