Condensed Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Equity in net income attributable to AB Unitholders	$ 122,705	$ 69,121	$ 208,986	$ 145,503
Income taxes	9,182	8,563	18,241	17,508
Net income	$ 113,523	$ 60,558	$ 190,745	$ 127,995
Net income per unit:
Basic (in dollars per share)	$ 0.99	$ 0.53	$ 1.66	$ 1.13
Diluted (in dollars per share)	$ 0.99	$ 0.53	$ 1.66	$ 1.13