Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 775,457	$ 1,153,734	$ 861,783
Other comprehensive income:
Foreign currency translation adjustments, before reclassification and tax:	(47,208)	(7,839)	23,882
Less: reclassification adjustment for gains (losses) included in net income upon liquidation	0	4,458	(216)
Foreign currency translation adjustments, before tax	(47,208)	(12,297)	24,098
Income tax benefit (expense)	1,215	457	(854)
Foreign currency translation adjustments, net of tax	(45,993)	(11,840)	23,244
Changes in employee benefit related items:
Amortization of prior service cost	24	24	24
Recognized actuarial gain (loss)	6,922	15,743	(4,280)
Changes in employee benefit related items	6,946	15,767	(4,256)
Income tax (expense)	(95)	(59)	(187)
Employee benefit related items, net of tax	6,851	15,708	(4,443)
Other comprehensive (loss) gain	(39,142)	3,868	18,801
Less: Comprehensive (loss) income in consolidated entities attributable to non-controlling interests	(56,356)	5,111	(4,169)
Comprehensive income attributable to AB Unitholders	$ 792,671	$ 1,152,491	$ 884,753