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Net Income per Unit
 9 Months Ended
Sep. 30, 2023
Earnings Per Unit [Abstract]  
Net Income per Unit Net Income per Unit
Basic net income per unit is derived by reducing net income for the 1% general partnership interest and dividing the remaining 99% by the basic weighted average number of limited partnership units outstanding for each period. Diluted net income per unit is derived by reducing net income for the 1% general partnership interest and dividing the remaining 99% by the total of the diluted weighted average number of limited partnership units outstanding for each period.
 Three Months Ended September 30,Nine Months Ended September 30,
 2023202220232022
(in thousands, except per unit amounts)
Net income attributable to AB Unitholders$167,404 $175,180 $537,292 $644,676 
Weighted average limited partnership units outstanding – basic285,360 272,646 285,584 271,675 
Dilutive effect of compensatory options to buy AB Holding Units— — — 2 
Weighted average limited partnership units outstanding – diluted285,360 272,646 285,584 271,677 
Basic net income per AB Unit$0.58 $0.64 $1.86 $2.35 
Diluted net income per AB Unit$0.58 $0.64 $1.86 $2.35 
There were no anti-dilutive options excluded from diluted net income in the three and nine months ended September 30, 2023 or 2022.