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Securities Financing Activities Securities Financing Activities (Policies)	12 Months Ended
	Dec. 31, 2012
Securities Financing Transactions Disclosures [Abstract]
Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Financings, Policy [Policy Text Block]	The amounts reported in the table above were reduced by $96.9 billion and $115.7 billion at December 31, 2012 and 2011, respectively, as a result of agreements in effect that meet the specified conditions for net presentation under applicable accounting guidance.

- Definition

Disclosure of accounting policy for recognizing whether a transfer of a financial asset is accounted for as a financing, and its initial and subsequent accounting for such a transaction.

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