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Long-Term Debt (Narrative - Trust Preferred Securities) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
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%  
Percentage of Preferred Securities Sold   100.00%    
Liquidation preference (per share) $ 25      
London interbank offer rate three-month London interbank offer rate plus 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