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Long-Term Debt (Narrative - Trust Preferred Securities) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Mar. 07, 2011
Mar. 01, 2011
Dec. 30, 2009
Trust Preferred Securities Subject to Mandatory Redemption [Member]
         
Debt Instrument [Line Items]          
Preferred securities         2,540,000
Aggregate liquidation preference         $ 2,500
Fixed rate / Floating rate 8.125% 8.125%   8.125%  
Percentage of Preferred Securities Sold     100.00%    
Liquidation preference (per share) $ 25 $ 25      
Debt Instrument, Description of Variable Rate Basis three-month London interbank offer rate        
Debt Instrument, Basis Spread on Variable Rate   5.785%      
Warrant [Member]
         
Debt Instrument [Line Items]          
Preferred securities         127,000
Aggregate liquidation preference         $ 127
Class of Warrant or Right, Exercise Price of Warrants or Rights         0.01