Business Segment Information - Net Revenues Derived From Investment Management, Research and Related Services (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Total revenues	$ 4,120,728	$ 4,445,288	$ 3,724,186
Less: Interest expense	66,438	3,686	15,650
Net revenues	4,054,290	4,441,602	3,708,536
Institutions
Revenues:
Total revenues	659,983	587,017	512,914
Retail
Revenues:
Total revenues	2,000,908	2,223,829	1,811,948
Private Wealth Management
Revenues:
Total revenues	1,004,003	1,126,142	882,672
Bernstein Research Services
Revenues:
Total revenues	416,273	452,017	459,744
Other
Revenues:
Total revenues	$ 39,561	$ 56,283	$ 56,908