Annual report pursuant to Section 13 and 15(d)

Employee Incentive Plans - Other Incentive Plans (Details)

v2.4.0.6
Employee Incentive Plans - Other Incentive Plans (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Other Compensation Arrangements [Abstract]      
Assets mainatained as an economic hedge $ 2,700,000,000 $ 2,300,000,000  
Accrued liabilities 2,200,000,000 2,100,000,000  
Employee Stock Purchase Plan
      
Employee Stock Purchase Plan [Abstract]      
Minimum eligible percentage of compensation to purchase common stock under ESPP 0.01    
Maximum eligible percentage of compensation to purchase common stock under ESPP 10.00%    
Maximum percentage discount on purchases 0.05    
Maximum annual contribution per employee 23,750    
Exercised price of each ESPP stock purchase right $ 0.39    
Financial Advisor Capital Accumulation Award Plan | Performance Shares
      
Financial Advisor Capital Accumulation Award Plans [Abstract]      
Shares awarded under the plan 11    
Financial Advisor Capital Accumulation Award Plan | Performance Shares Prior to 2003
      
Financial Advisor Capital Accumulation Award Plans [Abstract]      
Requisite service period 10 years    
Accrual for cash payments made in lieu of shares   $ 141,000,000 $ 246,000,000
Financial Advisor Capital Accumulation Award Plan | Performance Shares Granted after 2002
      
Financial Advisor Capital Accumulation Award Plans [Abstract]      
Requisite service period 8 years