Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		12 Months Ended
	Feb. 06, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Total cash distributions per unit paid to unitholders (in dollars per unit)				$ 2.62	$ 3.54	$ 3.58
Long-Term Incentive Compensation Plans [Abstract]
Restricted AB holding unit awards to employees (in units)		5,000,000	3,800,000
Options to buy AB holding units outstanding, number (in units)				0	5,774
Proceeds from exercise of compensatory options to buy AB holding units				$ 0	$ 178	$ 3,402
Employees and Eligible Directors
Long-Term Incentive Compensation Plans [Abstract]
Restricted AB holding unit awards to employees (in units)				5,600,000	4,700,000
Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Subsequent cash distribution, distribution declared (in dollars per unit)	$ 0.77