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Transactions with Related Parties Transactions with Related Parties (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Related Party Transactions [Abstract]
Loans attributed to persons who were related parties	$ 140	$ 198
New loans to related parties	692
Repayments on loans to related parties	$ 750

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

Reflects the amount of collections received from related parties to reduce the carrying amounts of loans and leases receivable due from them.