Deposits (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deposits [Abstract]
Contractual maturities, time deposits, $100,000 or more, domestic, less than 3 months [Abstract] [Abstract]	$ 351,000,000
Contractual maturities, time deposits, $100,000 or more, domestic, between 3 and 6 months [Abstract]	301,000,000
Contractual maturities, time deposits, $100,000 or more, between 6 and 12 months [Abstract]	374,000,000
Contractual maturities, time deposits, $100,000 or more, after 12 months [Abstract] [Abstract]	304,000,000
Domestic time deposits under $100,000	1,300,000,000	1,500,000,000
Domestic time deposits $100,000 and over	1,300,000,000	1,500,000,000
Foreign time deposits $100,000 and over	252,000,000	213,000,000
Deposit overdrafts reclassified as loan balances	$ 39,000,000	$ 78,000,000