Goodwill and Other Intangible Assets (Summary of Changes in Goodwill and Other Intangible Assets) (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 8,149
Other adjustments to goodwill	17	[1]
Goodwill, Ending Balance	8,207
Other intangible assets, beginning balance	2,604
Amortization expense	406	[2]	324	[2]
Other intangible assets, ending balance	1,949
Goodwill [Member]
Goodwill [Line Items]
BankAtlantic branch acquisition	41
Customer Related And Other Intangibles [Member]
Goodwill [Line Items]
BankAtlantic branch acquisition	1
Other intangible assets, beginning balance	903
Amortization expense	(122)
Other intangible assets, ending balance	782
Servicing Contracts [Member]
Goodwill [Line Items]
Other intangible assets, beginning balance	1,701
Mortgage and other loan servicing rights	(250)
Impairment charge	(157)
Amortization expense	(127)
Other intangible assets, ending balance	$ 1,167

[1] The Distressed Assets Portfolio business segment does not have any goodwill allocated to it.

[2] Includes the impact of impairment charges.