Consolidated Statements of Changes in Partners' Capital - USD ($) $ in Thousands	Total	Receivables from Affiliates	AB Holding Units held for Long-term Incentive Compensation Plans	Accumulated Other Comprehensive (Loss)	Non-redeemable Non-controlling Interests in Consolidated Entities	Non-redeemable Non-controlling Interests in Consolidated Entities CarVal	General Partner’s Capital	General Partner’s Capital EQH Purchase Agreement	General Partner’s Capital CarVal	Limited Partners' Capital	Limited Partners' Capital EQH Purchase Agreement	Limited Partners' Capital CarVal
Balance, beginning of period at Dec. 31, 2021					$ 0
Increase (Decrease) in Temporary Equity [Roll Forward]
CarVal acquisition						$ 12,607
Net income					0
Distributions to non-controlling interests, net					0
Adjustment					0
Balance, end of period at Dec. 31, 2022					12,607
Partners' capital, beginning balance at Dec. 31, 2021		$ (8,333)	$ (119,470)	$ (90,335)			$ 42,850			$ 4,336,211
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 775,457						8,318			823,495
Cash distributions to Unitholders							(10,715)			(1,059,105)
Long-term incentive compensation		607	198,783				25			2,521
Issuance (retirement) of AB Units, net			40,346				(385)			(38,286)
Issuance of AB Units for CarVal acquisition								$ 0	$ 5,892		$ 0	$ 583,277
Capital contributions from (to) AB Holding		3,456
Purchases of AB Holding Units to fund long-term compensation plans, net			(210,568)
Re-valuation of AB Holding Units held in rabbi trust			(4,240)
Other			(169)
Foreign currency translation adjustment	(45,993)			(45,993)
Changes in employee benefit related items, net of tax	6,851			6,851
Partners' capital, ending balance at Dec. 31, 2022	4,465,033	(4,270)	(95,318)	(129,477)			45,985			4,648,113
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital	4,477,640
CarVal acquisition						0
Net income					743
Distributions to non-controlling interests, net					(8,514)
Adjustment					(264)
Balance, end of period at Dec. 31, 2023					4,572
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	788,619						7,646			756,964
Cash distributions to Unitholders							(8,411)			(830,860)
Long-term incentive compensation		727	179,724				(21)			(2,080)
Issuance (retirement) of AB Units, net			(17,562)				189			18,482
Issuance of AB Units for CarVal acquisition								0	0		0	0
Capital contributions from (to) AB Holding		(947)
Purchases of AB Holding Units to fund long-term compensation plans, net			(144,086)
Re-valuation of AB Holding Units held in rabbi trust			879
Other			0
Foreign currency translation adjustment	14,033			14,033
Changes in employee benefit related items, net of tax	9,080			9,080
Partners' capital, ending balance at Dec. 31, 2023	4,448,790	(4,490)	(76,363)	(106,364)			45,388			4,590,619
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital	4,453,362
CarVal acquisition						$ 0
Net income					3,940
Distributions to non-controlling interests, net					(7,164)
Adjustment					0
Balance, end of period at Dec. 31, 2024					$ 1,348
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,193,485						11,732			1,161,515
Cash distributions to Unitholders							(9,553)			(944,912)
Long-term incentive compensation		1,088	216,133				(61)			(6,014)
Issuance (retirement) of AB Units, net			(49,894)				513			49,908
Issuance of AB Units for CarVal acquisition								$ 1,500	$ 0		$ 148,500	$ 0
Capital contributions from (to) AB Holding		509
Purchases of AB Holding Units to fund long-term compensation plans, net			(157,038)
Re-valuation of AB Holding Units held in rabbi trust			4,796
Other			0
Foreign currency translation adjustment	(10,587)			(10,587)
Changes in employee benefit related items, net of tax	6,370			6,370
Partners' capital, ending balance at Dec. 31, 2024	4,873,295	$ (2,893)	$ (62,366)	$ (110,581)			$ 49,519			$ 4,999,616
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital	$ 4,874,643