v2.4.0.6
Legal Actions (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Wells Fargo Mortgage-Backed Certificates Litigation [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters $ 125,000,000
Wells Fargo Mortgage-Backed Certificates Litigation [Member] | The Bank of Chicago [Member]
  
Legal Actions (Textual) [Abstract]  
Mortgage-backed securities sale amount, rescission sought by plaintiff 4,200,000,000
Wells Fargo Mortgage-Backed Certificates Litigation [Member] | The Bank of Indianapolis [Member]
  
Legal Actions (Textual) [Abstract]  
Mortgage-backed securities sale amount, rescission sought by plaintiff 3,000,000,000
Mortgage Related Regulatory Investigations [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 5,300,000,000
Mortgage Related Regulatory Investigations [Member] | Refinance Program [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 900,000,000
Mortgage Related Regulatory Investigations [Member] | Consumer Relief Program [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 3,400,000,000
Mortgage Related Regulatory Investigations [Member] | Foreclosure Assistance Payment [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 1,000,000,000
Mortgage Related Regulatory Investigations [Member] | Office of the Comptroller of the Currency [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 83,000,000
Mortgage Related Regulatory Investigations [Member] | Federal Reserve [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 85,000,000
Municipal Derivatives Bid Practices Investigation [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 148,000,000
In re Municipal Derivatives Antitrust Litigation [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 37,000,000
Gutierrez v. Wells Fargo Bank, N.A. Order of Posting Litigation [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 203,000,000
Equity Securities Litigation [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 75,000,000
In re Wachovia Preferred Securities and Bond/Notes Litigation [Member]
  
Legal Actions (Textual) [Abstract]  
Amounts to be paid in connection with legal or regulatory matters 590,000,000
Liability for Contingent Litigation Losses [Member]
  
Legal Actions (Textual) [Abstract]  
Loss Contingency, Range of Possible Loss, Portion Not Accrued $ 1,200,000,000