Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 165,066	$ 263,621	$ 582,746	$ 778,603
Other comprehensive (loss):
Foreign currency translation adjustments, before tax	(30,066)	(9,573)	(76,174)	(14,623)
Income tax benefit	907	224	1,542	272
Foreign currency translation adjustments, net of tax	(29,159)	(9,349)	(74,632)	(14,351)
Changes in employee benefit related items:
Amortization of prior service cost	6	6	18	18
Recognized actuarial gain	324	324	971	729
Changes in employee benefit related items	330	330	989	747
Income tax benefit (expense)	3	(2)	(12)	(4)
Employee benefit related items, net of tax	333	328	977	743
Other comprehensive (loss)	(28,826)	(9,021)	(73,655)	(13,608)
Less: Comprehensive (loss) income in consolidated entities attributable to non-controlling interests	(10,114)	(1,074)	(61,930)	2,207
Comprehensive income attributable to AB Unitholders	$ 146,354	$ 255,674	$ 571,021	$ 762,788