Mortgage Servicing Rights (Narrative) (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Transfers and Servicing of Financial Assets [Abstract]
Residential mortgage loans serviced for third parties	$ 2,700.0		$ 2,700.0		$ 2,900.0
Servicing income, including late and ancillary fees	$ 1.8	$ 2.0	$ 5.4	$ 6.0