Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 1,209,867	$ 1,037,400
Cash and securities segregated, at fair value (cost: $907,630 and $1,752,483)	908,539	1,753,478
Receivables, net:
Brokers and dealers	210,871	92,638
Brokerage clients	2,042,720	1,713,377
AB funds fees	274,841	325,407
Other fees	168,562	148,746
Investments:
Long-term incentive compensation-related	62,197	60,114
Other	160,921	193,261
Assets of consolidated company-sponsored investment funds:
Furniture, equipment and leasehold improvements, net	170,256	147,874
Goodwill	3,091,767	3,082,778
Intangible assets, net	43,627	44,496
Deferred sales commissions, net	76,005	64,066
Right-of-use assets	433,946	418,455
Other assets	441,095	264,418
Total assets	9,617,114	9,697,840
Payables:
Brokers and dealers	259,667	216,403
Securities sold not yet purchased	2,582	17,791
Brokerage clients	3,177,172	3,440,266
AB mutual funds	77,497	65,550
Accounts payable and accrued expenses	265,957	197,657
Lease liabilities	506,563	505,549
Accrued compensation and benefits	795,878	335,122
Debt	390,000	675,000
Total liabilities	5,507,910	5,483,958
Commitments and contingencies (See Note 12)
Redeemable non-controlling interest	117,804	102,359
Capital:
General Partner	41,447	41,776
Limited partners: 270,935,464 and 270,509,658 units issued and outstanding	4,197,125	4,229,485
Receivables from affiliates	(8,453)	(8,316)
AB Holding Units held for long-term incentive compensation plans	(130,908)	(57,219)
Accumulated other comprehensive loss	(107,811)	(94,203)
Partners’ capital attributable to AB Unitholders	3,991,400	4,111,523
Total liabilities, redeemable non-controlling interest and capital	9,617,114	9,697,840
Company-sponsored investment funds
Assets of consolidated company-sponsored investment funds:
Cash and cash equivalents	32,904	36,506
Investments	276,199	302,582
Other assets	12,797	12,244
Total assets	321,900	351,332
Payables:
Liabilities of consolidated company-sponsored investment funds	32,594	30,620
Total liabilities	32,594	30,620
Redeemable non-controlling interest	117,804	102,359
Capital:
Partners’ capital attributable to AB Unitholders	171,502	218,353
Total liabilities, redeemable non-controlling interest and capital	$ 321,900	$ 351,332