Goodwill and Other Intangible Assets Textuals (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
GOODWILL AND OTHER INTANGIBLE ASSETS (Textuals) [Abstract]
Amortization of Intangible Assets	$ 6.8	$ 6.2	$ 4.8
Future Amortization Expense, Year One	7.3
Future Amortization Expense, Year Two	5.9
Future Amortization Expense, Year Three	5.7
Future Amortization Expense, Year Four	5.1
Future Amortization Expense, Year Five	4.9
Finite-Lived Intangible Assets, Useful Life, Minimum	5
Finite-Lived Intangible Assets, Useful Life, Maximum	45
Amortization Of Acquired Intangible Asset Net Of Tax	4.1	3.7	2.7
Capitalized Computer Software, Amortization	$ 10.8	$ 8.6	$ 7.0