Goodwill and Other Intangible Assets (Narrative) (Details) (BankAtlantic [Member], USD $)	3 Months Ended
	Sep. 30, 2012
BankAtlantic [Member]
Goodwill And Other Intangible Assets Narrative [Line Items]
Acquired loans	$ 1,800,000,000
Assumed deposits	3,500,000,000
Assumed trust preferred securities	285,000,000
Preferred interest	95.00%
Incremental guarantee	35,000,000
Preference Amount	285,000,000
Net purchase price received, excluding cash held by BankAtlantic which consists of the net liabilities assumed less a deposit premium	45,000,000
Deposit premium	$ 316,000,000