Stockholders' Equity (Accumulated Other Comprehensive Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax	$ (340.7)		$ (396.0)		$ (443.8)
Other comprehensive income (loss) before reclassifications, net of tax	39.5		22.1
Reclassification adjustment for net (gains) losses included in net income, net of tax	15.8		25.7
Other comprehensive income (loss), net of tax	55.3		47.8		(191.7)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax	(204.3)		(104.6)		(102.8)
Other comprehensive income (loss) before reclassifications, net of tax	(99.7)		(1.8)
Reclassification adjustment for net (gains) losses included in net income, net of tax
Other comprehensive income (loss), net of tax	(99.7)	[1]	(1.8)	[1]
Hedging
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax	31.9		10.0		(16.7)
Other comprehensive income (loss) before reclassifications, net of tax	27.1		29.0
Reclassification adjustment for net (gains) losses included in net income, net of tax	(5.2)		(2.3)
Other comprehensive income (loss), net of tax	21.9	[2]	26.7	[2]
Defined Pension and Other Post-retirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax	(168.3)		(301.4)		(324.3)
Other comprehensive income (loss) before reclassifications, net of tax	112.1		(5.1)
Reclassification adjustment for net (gains) losses included in net income, net of tax	21.0		28.0
Other comprehensive income (loss), net of tax	$ 133.1	[3]	$ 22.9	[3]

[1] Net of income tax (expense) benefit of $(1.6), $(2.2) and $5.1 for the years ended December 31, 2013, 2012 and 2011, respectively.

[2] Net of income tax (expense) benefit of $1.0, $(12.3) and $12.9 for the years ended December 31, 2013, 2012 and 2011, respectively.

[3] Net of income tax (expense) benefit of $(81.8), $(6.5) and $58.0 for the years ended December 31, 2013, 2012 and 2011, respectively.