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Net Income per Unit
 9 Months Ended
Sep. 30, 2022
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,
 2022202120222021
(in thousands, except per unit amounts)
Net income attributable to AB Unitholders$175,180 $264,695 $644,676 $776,396 
Weighted average limited partnership units outstanding – basic272,646 271,594 271,675 272,088 
Dilutive effect of compensatory options to buy AB Holding Units— 3 2 14 
Weighted average limited partnership units outstanding – diluted272,646 271,597 271,677 272,102 
Basic net income per AB Unit$0.64 $0.96 $2.35 $2.82 
Diluted net income per AB Unit$0.64 $0.96 $2.35 $2.82 
There were no anti-dilutive options excluded from diluted net income in the three and nine months ended September 30, 2022 or 2021.