Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 165,240	$ 165,066	$ 547,918	$ 582,746
Other comprehensive (loss) income:
Foreign currency translation adjustments, before tax	(15,627)	(30,066)	(4,971)	(76,174)
Income tax benefit	(274)	907	(211)	1,542
Foreign currency translation adjustments, net of tax	(15,901)	(29,159)	(5,182)	(74,632)
Changes in employee benefit related items:
Amortization of prior service cost	6	6	18	18
Recognized actuarial gain	298	324	894	971
Changes in employee benefit related items	304	330	912	989
Income tax (expense) benefit	(1)	3	(5)	(12)
Employee benefit related items, net of tax	303	333	907	977
Other comprehensive (loss)	(15,598)	(28,826)	(4,275)	(73,655)
Less: Comprehensive (loss) income in consolidated entities attributable to non-controlling interests	(2,164)	(10,114)	10,626	(61,930)
Comprehensive income attributable to AB Unitholders	$ 151,806	$ 146,354	$ 533,017	$ 571,021