Income Taxes (Unrecognized Tax Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefit - Beginning balance	$ 58.8	$ 66.1	$ 79.4
Gross Increases - Tax Positions in Prior Period	3.4	2.1	4.7
Gross Decreases - Tax Positions in Prior Period	(4.2)	(4.9)	(10.3)
Gross Increases - Tax Positions in Current Period	14.9	8.0	14.2
Gross Increases - Business Combinations	0	0	0
Settlements	0	(0.3)	0
Lapse of Statute of Limitations	(9.6)	(11.4)	(22.9)
Foreign Currency Translation	0.7	(0.8)	1.0
Unrecognized Tax Benefit - Ending Balance	$ 64.0	$ 58.8	$ 66.1