| Fact Group (Combination of Network and Hypercube) | |
| Network: | 306011 - Disclosure - Note F. Part 2. Long-term Debt Components (http://www.abc.com/role/LongTermDebtComponents) |
| Hypercube: | Schedule of Long-term Debt Components [Table] (abc:ScheduleOfLongTermDebtComponentsTable) |
| 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:Units | iso4217:USD |
| brm:CalendarTimeMeasure | ||
| brm:ConceptMeasure | 2009-12-31 | 2010-12-31 |
| Schedule of Long-term Debt Components [Line Items] | ||
| Long-term Debt [Roll Up] | ||
| Current potion of long-term debt | 22,000,000 | 22,000,000 |
| Long-term debt | 19,000,000 | 19,000,000 |
| Long-term Debt, Total | 41,000,000 | 41,000,000 |