Regulatory Matters - Narrative (Details) $ in Millions	3 Months Ended
Dec. 31, 2005 USD ($)
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Proceeds from (repurchase of) trust preferred securities	$ 10

The cash inflow from issuance of trust preferred securities, net of the cash outflow for repurchasing trust preferred securities, by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration