Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	7 Months Ended	9 Months Ended
Jul. 25, 2013 Fixed Interest Rate [Member]	Jul. 23, 2013 Fidelity Capital Trust II [Member]	Sep. 16, 2013 MAF Bancorp Capital Trust II [Member]
Subsequent Event [Line Items]
Trust Preferred Securities Redemption Date		Jul. 23, 2013	Sep. 16, 2013
Debt Instrument Issuance Date	Jul. 25, 2013
Final maturity date	Jul. 25, 2023
Stated interest rate	3.80%
Trust preferred securities		$ 22	$ 35
Debt Instrument Face Amount	$ 750

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant