| Fact Group (Combination of Network and Hypercube) | |
| Network: | 301000 - Disclosure - Note C. Inventory, By Component (http://www.abc.com/role/InventoryByComponent) |
| Hypercube: | Inventory, by Component [Table] (abc:InventoryByComponentTable) |
| 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 |
| Inventory, by Component [Line Items] | ||
| Inventory, by Component [Roll Up] | ||
| Inventory, Finished Goods | 1,000,000 | 1,000,000 |
| Inventory, Work in Process | 1,000,000 | 1,000,000 |
| Inventory, Raw Materials | 1,000,000 | 1,000,000 |
| Other Inventory, Supplies | 1,000,000 | 1,000,000 |
| Inventory, Net, Total | 4,000,000 | 4,000,000 |