Securities (Details 8) (USD $)	6 Months Ended	12 Months Ended
Jun. 30, 2014	Dec. 31, 2013
Securities Pledged as Collateral
Securities available for sale pledged as collateral	$ 6,100,000,000
Borrowings
Securities Pledged as Collateral
Securities available for sale pledged as collateral	600,000,000
Derivative
Securities Pledged as Collateral
Securities available for sale pledged as collateral	300,000,000
Public and trust deposits
Securities Pledged as Collateral
Securities available for sale pledged as collateral	5,200,000,000
Permitted by contract to sell or repledge	44,000,000	10,000,000
Repledged to secure public agency or bankruptcy deposits and to cover short sales	$ 0	$ 0

The carrying value as of the balance sheet date of securities received as collateral that is permitted by contract to sell or repledge.

No definition available.

+ Details

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- Definition

The fair value of available-for-sale securities that serve as collateral for borrowings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5086-111524

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- Definition

The carrying value as of the balance sheet date of securities received as collateral from a counterparty that were re-pledged, sold, delivered or otherwise reused by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 50

-Paragraph 1A

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729

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