| Line | Label | Object Class | Period Type | Balance | Name |
| 1 | 104103 - Statement - Classes of Treasury Stock | [Network] | http://www.abc.com/role/ClassesOfTreasuryStock | ||
| 2 | Class of Treasury Stock [Table] | [Table] | us-gaap:ClassOfTreasuryStockTable | ||
| 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 | Class of Treasury Stock [Axis] | [Axis] | abc:ClassOfTreasuryStockAxis | ||
| 9 | Class of Treasury Stock [Domain] | [Domain] | us-gaap:ClassOfTreasuryStockDomain | ||
| 10 | Common Class A [Member] | [Member] | us-gaap:CommonClassAMember | ||
| 11 | Common Class B [Member] | [Member] | us-gaap:CommonClassBMember | ||
| 12 | Class of Treasury Stock [Line Items] | [Line Items] | abc:ClassOfTreasuryStockLineItems | ||
| 13 | Class of Treasury Stock [Hierarchy] | [Abstract] | abc:ClassOfTreasuryStockHierarchy | ||
| 14 | Treasury Stock, Value | [Concept] Monetary | As Of | Debit | us-gaap:TreasuryStockValue |
| 15 | Treasury Stock, Shares | [Concept] Shares | As Of | us-gaap:TreasuryStockShares | |
| 16 | Treasury Stock, Restrictions | [Concept] Text/String | For Period | us-gaap:TreasuryStockRestrictions |