Goodwill and Other Intangible Assets Intangible Assets Schedule of Future Amortization (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 11
Finite-Lived Intangible Assets, Amortization Expense, Year Two	5
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2
Finite-Lived Intangible Assets, Amortization Expense, Year Four	2
Finite-Lived Intangible Assets, Amortization Expense, Year Five	2
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	3
Finite-Lived Intangible Assets, Net	25	[1]
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	4
Finite-Lived Intangible Assets, Amortization Expense, Year Two	0
Finite-Lived Intangible Assets, Amortization Expense, Year Three	0
Finite-Lived Intangible Assets, Amortization Expense, Year Four	0
Finite-Lived Intangible Assets, Amortization Expense, Year Five	0
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	0
Finite-Lived Intangible Assets, Net	4	[1]
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	7
Finite-Lived Intangible Assets, Amortization Expense, Year Two	5
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2
Finite-Lived Intangible Assets, Amortization Expense, Year Four	2
Finite-Lived Intangible Assets, Amortization Expense, Year Five	2
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	3
Finite-Lived Intangible Assets, Net	$ 21	[1]

[1] 1 Estimated future amortization expense is less than the intangible asset balance at December 31, 2013, due to the anticipated sale of RidgeWorth, including its intangible assets, in 2014. See additional discussion of the planned sale in Note 20, “Business Segment Reporting.”