XML 25 R52.htm IDEA: XBRL DOCUMENT v2.4.0.6
Derivative Instruments Derivative Call Options, Notional Amount and Fair Value, by Counterparty (Details) (USD $)
 9 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Derivative [Line Items]    
Derivative, Collateral, Obligation to Return Cash $ 1,300,000  
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure 95,200,000 109,300,000
Call Option [Member]
    
Derivative [Line Items]    
Derivative, Collateral, Obligation to Return Cash 490,000,000 165,400,000
Not Designated as Hedging Instrument [Member] | Derivative Counterparty, SunTrust [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 3,252,000 0
Notional Amount 79,000,000  
Not Designated as Hedging Instrument [Member] | Call Option [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 577,784,000 273,314,000
Notional Amount 14,931,491,000 14,069,330,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, Bank of America [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 44,463,000 43,481,000
Notional Amount 878,916,000 2,340,213,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, Barclays [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 120,239,000 60,903,000
Notional Amount 3,114,784,000 2,419,339,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, BNP Paribas [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 92,564,000 48,293,000
Notional Amount 2,302,476,000 2,533,301,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, Citibank, N.A. [Member] [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 70,255,000 0
Notional Amount 2,592,111,000 0
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, Credi Suisse [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 36,414,000 27,464,000
Notional Amount 842,294,000 1,423,802,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, Deutsche Bank [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 31,926,000 7,697,000
Notional Amount 832,802,000 384,420,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, HSBC [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 7,361,000 4,557,000
Notional Amount 210,029,000 348,674,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, J.P. Morgan [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 47,724,000 27,961,000
Notional Amount 1,095,703,000 2,109,019,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, Morgan Stanley [Member] [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 45,362,000 7,375,000
Notional Amount 1,164,516,000 244,180,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, UBS [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 20,000 240,000
Notional Amount 282,000 39,147,000
Not Designated as Hedging Instrument [Member] | Call Option [Member] | Derivative Counterparty, Wells Fargo (Wachovia) [Member]
    
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset 81,456,000 45,343,000
Notional Amount $ 1,897,578,000 $ 2,227,235,000