XML 58 R8.htm IDEA: XBRL DOCUMENT
v2.4.0.8

UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) (USD $) | 6 Months Ended
--- | ---
Jun. 30, 2014 | Jun. 30, 2013
Statement of Stockholders' Equity [Abstract] |  |
Preferred stock dividends (usd per share) | $ 18.75 | $ 18.54

X
- Definition Aggregate dividends declared during the period for each share of preferred stock outstanding. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration