Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Equity in net income attributable to AB Unitholders	$ 305,504	$ 416,326	$ 308,404
Income taxes	31,339	30,483	29,024
Net income	$ 274,165	$ 385,843	$ 279,380
Net income per unit:
Basic (in dollars per share)	$ 2.69	$ 3.88	$ 2.88
Diluted (in dollars per share)	$ 2.69	$ 3.88	$ 2.88