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Net Income per Unit
 6 Months Ended
Jun. 30, 2024
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 1.0% general partnership interest and dividing the remaining 99.0% 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 1.0% general partnership interest and dividing the remaining 99.0% by the total of the diluted weighted average number of limited partnership units outstanding for each period.
 Three Months Ended June 30,Six Months Ended June 30,
 2024202320242023
(in thousands, except per unit amounts)
Net income attributable to AB Unitholders$309,572 $175,737 $527,499 $369,888 
Weighted average limited partnership units outstanding – basic287,192 285,670 287,034 285,698 
Weighted average limited partnership units outstanding – diluted287,192 285,670 287,034 285,698 
Basic net income per AB Unit$1.07 $0.61 $1.82 $1.28 
Diluted net income per AB Unit$1.07 $0.61 $1.82 $1.28 
There were no anti-dilutive options excluded from diluted net income in the three and six months ended June 30, 2024 or 2023.