Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 178,760	$ 181,998	$ 382,678	$ 417,680
Other comprehensive income (loss):
Foreign currency translation adjustments, before tax	4,525	(34,286)	10,656	(46,108)
Income tax benefit	16	534	63	635
Foreign currency translation adjustments, net of tax	4,541	(33,752)	10,719	(45,473)
Changes in employee benefit related items:
Amortization of prior service cost	6	6	12	12
Recognized actuarial gain	298	324	596	647
Changes in employee benefit related items	304	330	608	659
Income tax (expense)	(1)	(6)	(4)	(15)
Employee benefit related items, net of tax	303	324	604	644
Other comprehensive income (loss)	4,844	(33,428)	11,323	(44,829)
Less: Comprehensive income (loss) in consolidated entities attributable to non-controlling interests	3,023	(26,771)	12,790	(51,816)
Comprehensive income attributable to AB Unitholders	$ 180,581	$ 175,341	$ 381,211	$ 424,667