| Fact Group (Combination of Network and Hypercube) | |
| Network: | 154107 - Statement - Statement of Changes in Equity, Stockholders' Equity Attributable to Noncontrolling Interest (http://www.abc.com/role/StatementOfChangesInEquityStockholdersEquityAttributableToNoncontrollingInterest) |
| Hypercube: | Changes in Stockholders' Equity Attributable to Noncontrolling Interest [Table] (abc:ChangesInStockholdersEquityAttributableToNoncontrollingInterestTable) |
| 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 | 2008-12-31 | 2009-01-01/2009-12-31 | 2009-12-31 | 2010-01-01/2010-12-31 | 2010-12-31 |
| Changes in Stockholders* Equity Attributable to Noncontrolling Interest [Line Items] | |||||
| Stockholders* Equity Attributable to Noncontrolling Interest [Roll Forward] | |||||
| Stockholders* Equity Attributable to Noncontrolling Interest, Beginning Balance | 2,000,000 | 3,000,000 | 4,000,000 | ||
| Stockholders* Equity Attributable to Noncontrolling Interest, Period Increase (Decrease) [Roll Up] | |||||
| Net income (loss) attributable to noncontrolling interest | (1,000,000) | (1,000,000) | |||
| Stockholders* Equity Attributable to Noncontrolling Interest, Period Increase (Decrease), Total | 1,000,000 | 1,000,000 | |||
| Stockholders* Equity Attributable to Noncontrolling Interest, Ending Balance | 2,000,000 | 3,000,000 | 4,000,000 | ||