Rollforward of Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Cumulative Translation Adjustment, Balance at beginning of period			$ (16.5)	$ (17.6)
Translation adjustments			(3.0)	(1.2)
Cumulative Translation Adjustment, Balance at end of period	(19.5)	(18.8)	(19.5)	(18.8)
Pension and Other Post-Retirement Benefits, Balance at beginning of period			5.2	16.1
Prior service credits recognized during the year, net of tax $4.9 tax	0	(2.7)	0	(8.2)
Pension and Other Post-Retirement Benefits, Balance at end of period	5.2	7.9	5.2	7.9
Unrealized Gain in Available-for-Sale Securities, Balance at beginning of period			0.2	0.2
Unrealized Gain in Available-for-Sale Securities, Balance at end of period	0.2	0.2	0.2	0.2
Total, Balance at beginning of period			(11.1)	(1.3)
Total, Balance at end of period	$ (14.1)	$ (10.7)	$ (14.1)	$ (10.7)