Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 203,918	$ 235,682
Other comprehensive income (loss):
Foreign currency translation adjustments, before tax	6,131	(11,822)
Income tax benefit	47	101
Foreign currency translation adjustments, net of tax	6,178	(11,721)
Changes in employee benefit related items:
Amortization of prior service cost	6	6
Recognized actuarial gain	298	323
Changes in employee benefit related items	304	329
Income tax (expense)	(3)	(9)
Employee benefit related items, net of tax	301	320
Other comprehensive income (loss)	6,479	(11,401)
Less: Comprehensive income (loss) in consolidated entities attributable to non-controlling interests	9,767	(25,045)
Comprehensive income attributable to AB Unitholders	$ 200,630	$ 249,326