Condensed 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	General Partner’s Capital	Limited Partners' Capital
Partners' capital, beginning balance at Dec. 31, 2023		$ (4,490)	$ (76,363)	$ (106,364)		$ 45,388	$ 4,590,619
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ 539,707				$ 1,568	5,275	522,224
Cash distributions to General Partner						(4,816)	(476,293)
Long-term incentive compensation plans activity		506	20,379			56	5,497
(Retirement) issuance of AB Units, net						(23)	(2,900)
Capital contributions from (to) AB Holding		162
Purchases of AB Holding Units to fund long-term compensation plans, net			(33,789)
Retirement of AB Units, net			3,627
Re-valuation of AB Holding Units held in rabbi trust			(6,466)
Foreign currency translation adjustment, net of tax	(1,636)			(1,636)
Changes in employee benefit related items, net of tax	564			564
Distributions to non-controlling interests, net					(2,695)
Contributions from non-controlling interest					95
Partners' capital, ending balance at Jun. 30, 2024	4,481,157	(3,822)	(92,612)	(107,436)		45,880	4,639,147
Balance, beginning of period at Dec. 31, 2023					4,572
Balance, end of period at Jun. 30, 2024					3,540
Partners' capital, beginning balance at Mar. 31, 2024		(4,686)	(95,859)	(115,894)		45,325	4,584,317
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	313,752				1,450	3,096	306,476
Cash distributions to General Partner						(2,351)	(232,714)
Long-term incentive compensation plans activity		291	11,618			(11)	(1,177)
(Retirement) issuance of AB Units, net						(179)	(17,755)
Capital contributions from (to) AB Holding		573
Purchases of AB Holding Units to fund long-term compensation plans, net			(28,237)
Retirement of AB Units, net			19,110
Re-valuation of AB Holding Units held in rabbi trust			756
Foreign currency translation adjustment, net of tax	8,564			8,564
Changes in employee benefit related items, net of tax	(106)			(106)
Distributions to non-controlling interests, net					(2,485)
Contributions from non-controlling interest					95
Partners' capital, ending balance at Jun. 30, 2024	4,481,157	(3,822)	(92,612)	(107,436)		45,880	4,639,147
Balance, beginning of period at Mar. 31, 2024					4,480
Balance, end of period at Jun. 30, 2024					3,540
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital	4,484,697
Total capital	4,874,643
Partners' capital, beginning 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]
Net (loss) income	428,982				533	4,312	426,954
Cash distributions to General Partner						(5,992)	(593,043)
Long-term incentive compensation plans activity		673	10,137			(22)	(2,178)
(Retirement) issuance of AB Units, net						15	136
Capital contributions from (to) AB Holding		(201)
Purchases of AB Holding Units to fund long-term compensation plans, net			(43,646)
Retirement of AB Units, net			347
Re-valuation of AB Holding Units held in rabbi trust			1,092
Foreign currency translation adjustment, net of tax	36,842			36,842
Changes in employee benefit related items, net of tax	23,362			23,362
Distributions to non-controlling interests, net					(274)
Contributions from non-controlling interest					28
Partners' capital, ending balance at Jun. 30, 2025	4,732,083	(2,421)	(94,436)	(50,377)		47,832	4,831,485
Balance, beginning of period at Dec. 31, 2024					1,348
Balance, end of period at Jun. 30, 2025					1,635
Partners' capital, beginning balance at Mar. 31, 2025		(3,411)	(91,369)	(76,415)		48,395	4,888,248
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	207,288				(611)	2,104	208,363
Cash distributions to General Partner						(2,596)	(256,812)
Long-term incentive compensation plans activity		427	2,829			(15)	(1,444)
(Retirement) issuance of AB Units, net						(56)	(6,870)
Capital contributions from (to) AB Holding		563
Purchases of AB Holding Units to fund long-term compensation plans, net			(14,171)
Retirement of AB Units, net			7,579
Re-valuation of AB Holding Units held in rabbi trust			696
Foreign currency translation adjustment, net of tax	26,038			26,038
Changes in employee benefit related items, net of tax	0			0
Distributions to non-controlling interests, net					(274)
Contributions from non-controlling interest					16
Partners' capital, ending balance at Jun. 30, 2025	4,732,083	$ (2,421)	$ (94,436)	$ (50,377)		$ 47,832	$ 4,831,485
Balance, beginning of period at Mar. 31, 2025					2,504
Balance, end of period at Jun. 30, 2025					$ 1,635
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital	$ 4,733,718