| Report Element Information |
| Run date/time: 6/5/2011 7:34:37 AM |
| Report Element Attributes: |
| Report element from taxonomy prefix: | abc |
| Filer taxonomy standard label: | Changes in Preferred Stock, by Class [Line Items] |
| Documentation: | Abstract concept used for organization only |
| Balance type: | |
| Period type: | For Period (duration) |
| Report element type: | [Line Items] |
| Data type: | Text/String (xbrli:stringItemType) |
| ID: | abc_ChangesInPreferredStockByClassLineItems |
| Name: | abc:ChangesInPreferredStockByClassLineItems |
| Labels of Report Element: (Labels from filer taxonomy, does not include other labels) |
| Role: | Label | Lang |
| (http://www.xbrl.org/2003/role/documentation) | Abstract concept used for organization only | en-US |
| Standard label (http://www.xbrl.org/2003/role/label) | Changes in Preferred Stock, by Class [Line Items] | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| References of Report Element, SEC Regulation S-X (SX): |
| Publisher, Name: | Number | Section | Paragraph | Subparagraph | Article |
| References of Report Element, US GAAP Legacy: |
| Publisher: | Name | Number | Chapter | Section | Paragraph | Subparagraph | Article | Clause | Appendix |