Goodwill and Other Intangible Assets (Narrative) (Details)	9 Months Ended
	Sep. 30, 2012
Customer Related and Other Intangible Assets [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Asset Useful Life	1 year
Customer Related and Other Intangible Assets [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Asset Useful Life	11 years
Customer Related and Other Intangible Assets [Member] | Weighted Average [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Asset Useful Life	8 years
Mortgage Servicing Rights [Member] | Minimum [Member] | Commercial Mortgage [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Asset Useful Life	5 years
Mortgage Servicing Rights [Member] | Maximum [Member] | Commercial Mortgage [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Asset Useful Life	10 years