Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other Intangible Assets [Abstract]
Amortization expense	$ 63.3	$ 53.1	$ 42.5
Estimated amortization expense, 2012	83.1
Estimated amortization expense, 2013	83.0
Estimated amortization expense, 2014	80.2
Estimated amortization expense, 2015	77.7
Estimated amortization expense, 2016	$ 74.3