| Line | Label | Object Class | Period Type | Balance | Name |
| 1 | 154105 - Statement - Statement of Changes in Equity, Retained Earnings | [Network] | http://www.abc.com/role/StatementOfChangesInEquityRetainedEarnings | ||
| 2 | Changes in Retained Earnings [Table] | [Table] | abc:ChangesInRetainedEarningsTable | ||
| 3 | Report Date [Axis] | [Axis] | us-gaap:CreationDateAxis | ||
| 4 | Financial Statements Date [Domain] | [Domain] | us-gaap:DefaultFinancialStatementsDateMember | ||
| 5 | As Reported February 12, 2011 [Member] | [Member] | For Period | abc:AsReportedFebruary122011Member | |
| 6 | Legal Entity [Axis] | [Axis] | dei:LegalEntityAxis | ||
| 7 | Consolidated Entity [Domain] | [Domain] | dei:EntityDomain | ||
| 8 | Changes in Retained Earnings [Line Items] | [Line Items] | abc:ChangesInRetainedEarningsLineItems | ||
| 9 | Retained Earnings (Accumulated Deficit) [Roll Forward] | [Abstract] | abc:RetainedEarningsAccumulatedDeficitRollForward | ||
| 10 | Retained Earnings (Accumulated Deficit), Beginning Balance | [Concept] Monetary | As Of | Credit | us-gaap:RetainedEarningsAccumulatedDeficit |
| 11 | Retained Earnings (Accumulated Deficit), Period Increase (Decrease) [Roll Up] | [Abstract] | abc:RetainedEarningsAccumulatedDeficitPeriodIncreaseDecreaseRollUp | ||
| 12 | Net income (loss) attributable to parent | [Concept] Monetary | For Period | Credit | us-gaap:NetIncomeLoss |
| 13 | Dividends | [Concept] Monetary | For Period | Debit | us-gaap:Dividends |
| 14 | Retained Earnings (Accumulated Deficit), Period Increase, Period Increase (Decrease), Total | [Concept] Monetary | For Period | Credit | abc:RetainedEarningsAccumulatedDeficitPeriodIncreasePeriodIncreaseDecrease |
| 15 | Retained Earnings (Accumulated Deficit), Ending Balance | [Concept] Monetary | As Of | Credit | us-gaap:RetainedEarningsAccumulatedDeficit |