Legal Proceedings (Details) - Jun. 30, 2015	USD ($)
Bumpers Et Al V Community Bank of Northern Virginia [Member]
Loss Contingencies [Line Items]
Additional Borrowers Seeking Similar Damages	650
Procured Individual Judgments	$ 11,000
Legal Reserve [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Loss contingency, range of possible loss not accrued	$ 725,000,000

The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 05

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6395354&loc=d3e12631-108344

Name:	us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant