| Line | Label | Object Class | Period Type | Balance | Name |
| 1 | 105102 - Statement - Statement of Operations, Earnings Per Share | [Network] | http://www.abc.com/role/StatementOfOperationsEarningsPerShare | ||
| 2 | Earnings Per Share [Table] | [Table] | abc:EarningsPerShareTable | ||
| 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 | Earnings Per Share [Line Items] | [Line Items] | abc:EarningsPerShareLineItems | ||
| 9 | EARNINGS PER SHARE [Hierarchy] | [Abstract] | us-gaap:EarningsPerShareAbstract | ||
| 10 | Earnings Per Share, Basic | [Concept] Share | For Period | us-gaap:EarningsPerShareBasic |