Deposits (Narrative) (Details) (USD $) In Billions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Banking and Thrift [Abstract]
Time Deposits, $100,000 or More	$ 0.9	$ 0.9
Percentage of time deposits with a denomination of $100 thousand or more to total deposits	5.80%	6.40%