Other Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Tax Credit Carryforward [Line Items]
Affordable Housing Project Investment, Income Tax Effect	$ 1.7	$ 1.9
Affordable Housing Tax Credits and Other Tax Benefits, Amount	1.4	2.0
Capital commitments relating to investments	7.1	5.3
Low Income Housing Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	$ 7.1	$ 7.1