Condensed Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Equity in net income attributable to AB Unitholders	$ 86,281	$ 76,382
Income taxes	9,059	8,945
Net income	$ 77,222	$ 67,437
Net income per unit:
Basic (in dollars per share)	$ 0.67	$ 0.59
Diluted (in dollars per share)	$ 0.67	$ 0.59