| Line | Label | Object Class | Period Type | Balance | Name |
| 1 | 154103 - Statement - Statement of Changes in Equity, Additional Paid-in Capital | [Network] | http://www.abc.com/role/StatementOfChangesInEquityAdditionalPaidInCapital | ||
| 2 | Changes in Additional Paid-in Capital [Table] | [Table] | abc:ChangesInAdditionalPaidInCapitalTable | ||
| 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 Additional Paid-in Capital [Line Items] | [Line Items] | abc:ChangesInAdditionalPaidInCapitalLineItems | ||
| 9 | Additional Paid-in Capital [Roll Forward] | [Abstract] | abc:AdditionalPaidInCapitalRollForward | ||
| 10 | Additional Paid in Capital, Beginning Balance | [Concept] Monetary | As Of | Credit | us-gaap:AdditionalPaidInCapital |
| 11 | Additional Paid-in Capital, Period Increase (Decrease) | [Concept] Monetary | For Period | Credit | abc:AdditionalPaidInCapitalPeriodIncreaseDecrease |
| 12 | Additional Paid in Capital, Ending Balance | [Concept] Monetary | As Of | Credit | us-gaap:AdditionalPaidInCapital |