XML 96 R103.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock Incentive Compensation and Employee Benefit Plans (Schedule of Valuation Assumptions) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Amortized Cost, Due in less than one year 431,824  
Amortized Cost, Due after one through five years 2,357,902  
Amortized Cost, Due after five through ten years 674,560  
Amortized Cost, Due after ten years 122,330  
Trading, Amortized Cost 4,554,362  
Trading, Fair Value, Due in less than one year 432,400  
Trading, Fair Value, Due after one through five years 2,386,475  
Trading, Fair Value, Due after five through ten years 709,307  
Trading, Fair Value, Due after ten years 136,717  
Trading Securities 4,665,421  
Performance Shares [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected volatility rate, minimum 19.80%  
Expected volatility rate, maximum 24.40% 35.00%
Risk free interest rate, minimum 0.20% 0.16%
Risk free interest rate, maximum 0.60% 2.10%