| Fact Group (Combination of Network and Hypercube) | |
| Network: | 104104 - Statement - Statement of Financial Position, Other Parenthetical (http://www.abc.com/role/OtherParenthetical) |
| Hypercube: | Statement of Financial Condition, Classified, Parenthetical, Other [Table] (abc:StatementOfFinancialConditionClassifiedParentheticalOtherTable) |
| Slicers (applies to each fact value in each table cell) | |
| brm:ReportingEntityMeasure | 0000000001 (http://www.sec.gov/CIK) |
| us-gaap:CreationDateAxis | abc:AsReportedFebruary122011Member |
| dei:LegalEntityAxis | dei:EntityDomain |
| brm:CalendarTimeMeasure | |||
| brm:ConceptMeasure | 2009-12-31 | 2010-01-01/2010-12-31 | 2010-12-31 |
| Statement of Financial Condition, Classified, Parenthetical, Other [Line Items] | |||
| Statement of Financial Condition, Classified, Parenthetical, Other [Hierarchy] | |||
| Allowance for Doubtful Accounts Receivable, Current | 1,000,000 | 1,000,000 | |
| Retained Earnings, Deficit Eliminated | Sollicitudin lacus cursus est ullamcorper vel sollicitudin lacus est ullamcorper vel sollicitudin lacus | ||