Quarterly report pursuant to Section 13 or 15(d)

Borrowings and Deposits Long-term Borrowings (Details)

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Borrowings and Deposits Long-term Borrowings (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Long-term Debt $ 81,551 $ 92,249
Put Option and Structured Notes With Performance Requirements [Member]
   
Debt Instrument [Line Items]    
Long-term Debt $ 9,600