| Component: (Network and Table) | |
|---|---|
| Network | 2409403 - Disclosure - Fair Value - Change in Carrying Value of Level 3 Financial Instruments (Details) (http://www.abglobal.com/role/FairValueChangeInCarryingValueOfLevel3FinancialInstrumentsDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001109448 (http://www.sec.gov/CIK) |
| Fair Value Disclosures [Abstract] | Period [Axis] | |
|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | |
Fair Value Disclosures [Abstract] | ||
Fair value measurement Level 3 reconciliation [Abstract] | ||
Balance as of beginning of period | ||
Transfers out | ( | ( |
Activity related to consolidated VIEs | ||
Purchases | ||
Sales | ( | |
Realized gains, net | ||
Unrealized (losses) gains, net | ( | |
Balance as of end of period | 16,148,000 | |