Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Gross Amount
Balance at the beginning of the period	$ 89.1	$ 91.4	$ 98.9
Foreign currency translation	7.0	(2.3)	(7.5)
Balance at the end of the period	96.1	89.1	91.4
Cumulative Impairment Losses
Balance at the beginning of the period	(48.6)	(49.9)	(54.0)
Foreign currency translation	(6.1)	1.3	4.1
Balance at the end of the period	(54.7)	(48.6)	(49.9)
Net
Balance at the beginning of the period	40.5	41.5	44.9
Foreign currency translation	0.9	(1.0)	(3.4)
Balance at the end of the period	$ 41.4	$ 40.5	$ 41.5