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Network
2417405 - Disclosure - Long-Term Incentive Compensation Plans - Summary of Changes in Unvested Restricted AB Holding Units (Details)
(http://www.abglobal.com/role/LongTermIncentiveCompensationPlansSummaryOfChangesInUnvestedRestrictedAbHoldingUnitsDetails)
TableSchedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001109448 (http://www.sec.gov/CIK)
Award Type [Axis]Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
AB Holding Units
 
Unvested as of December 31, 2015 (in units)
19,779,814  
Granted (in units)
7,085,482  
Vested (in units)
(7,384,528) 
Forfeited (in units)
(334,727) 
Unvested as of December 31, 2016 (in units)
19,146,041  
 
Weighted Average Grant Date Fair Value per AB Holding Unit
 
Unvested as of December 31, 2015, Weighted Average Grant Date Fair Value per AB Holding Unit (in dollars per unit)
22.05  
Granted, Weighted Average Grant Date Fair Value per AB Holding Unit (in dollars per unit)
23.14  
Vested, Weighted Average Grant Date Fair Value per AB Holding Unit (in dollars per unit)
21.58  
Forfeited, Weighted Average Grant Date Fair Value per AB Holding Unit (in dollars per unit)
24.05  
Unvested as of December 31, 2016, Weighted Average Grant Date Fair Value per AB Holding Unit (in dollars per unit)
22.60