Long-term Incentive Compensation Plans (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from exercise of compensatory options to buy AB Holding Units	$ 0	$ 178
AB Holding Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units issued upon options exercised (in shares)	0	5,774
Proceeds from exercise of compensatory options to buy AB Holding Units	$ 0	$ 100
Employees and Eligible Directors | AB Holding Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted AB Holding Unit awards granted to employees and Eligible Directors (in shares)	400,000	800,000