Related Party (Corporate Owned Life Insurance) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Related Party Transactions [Abstract]      
Life Insurance, Corporate or Bank Owned, Amount $ 2,595 $ 2,390  
Fees related to corporate owned life insurance 42 35 33
Maximum amount of mortality risk $ 3.5