v2.4.0.8
Derivatives and Hedging Activities (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets $ 662 $ 942
Total fair value of derivatives liabilties 275 329
Not Sold Or Repledged [Member]
    
Derivative [Line Items]    
Securities received as collateral 0 335
Risk Exposure Low [Member]
    
Derivatives, Fair Value [Line Items]    
Total derivative assets, net 255 258
Derivative [Line Items]    
Total derivative assets, net 255 258
Individually Significant Counterparties [Member]
    
Derivatives, Fair Value [Line Items]    
Total derivative assets, net 0 0
Total derivative liabilities, net 0 0
Derivative [Line Items]    
Total derivative assets, net 0 0
Total derivative liabilities, net 0 0
Cash Flow Hedging [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 0 0
Other Assets [Member]
    
Derivatives, Fair Value [Line Items]    
Cash collateral netting (380) (326)
Derivative asset and liability netting (27) (23)
Total derivative assets, net 255 593
Derivative [Line Items]    
Total derivative assets, net 255 593
Other Assets [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 566 867
Other Assets [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 96 75
Other Assets [Member] | Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 0 0
Other Assets [Member] | Foreign exchange contracts [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 96 75
Other Assets [Member] | Equity-linked contract [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 0 0
Other Assets [Member] | Fair Value Hedging [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 517 824
Other Assets [Member] | Fair Value Hedging [Member] | Total Return Swap [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 0 0
Other Assets [Member] | Net Investment Hedging [Member] | Foreign exchange contracts [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives assets 49 43
Other Liabilities [Member]
    
Derivatives, Fair Value [Line Items]    
Cash collateral netting (14) (21)
Derivative asset and liability netting (27) (23)
Total derivative liabilities, net 234 285
Derivative [Line Items]    
Total derivative liabilities, net 234 285
Other Liabilities [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 170 169
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 105 160
Other Liabilities [Member] | Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 0 0
Other Liabilities [Member] | Foreign exchange contracts [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 105 158
Other Liabilities [Member] | Equity-linked contract [Member] | Not Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 0 2
Other Liabilities [Member] | Fair Value Hedging [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 0 0
Other Liabilities [Member] | Fair Value Hedging [Member] | Total Return Swap [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties 6 19
Other Liabilities [Member] | Net Investment Hedging [Member] | Foreign exchange contracts [Member] | Designated as Hedging Instrument [Member]
    
Derivatives, Fair Value [Line Items]    
Total fair value of derivatives liabilties $ 164 $ 150