Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 628,758	$ 671,930
Cash and securities segregated, at fair value (cost: $1,288,801 and $816,350)	1,288,867	816,350
Receivables, net:
Brokers and dealers	351,085	199,690
Brokerage clients	1,646,767	1,647,059
AB funds fees	201,008	212,115
Other fees	108,671	124,164
Investments:
Long-term incentive compensation-related	57,031	66,034
Other	448,606	377,555
Cash and cash equivalents	652,451	998,448
Other assets	281,424	211,893
Furniture, equipment and leasehold improvements, net	151,115	157,569
Goodwill	3,066,700	3,066,700
Intangible assets, net	91,824	105,784
Deferred sales commissions, net	16,762	30,126
Total assets	8,672,114	9,295,167
Payables:
Brokers and dealers	378,402	237,861
Securities sold not yet purchased	25,796	29,961
Brokerage clients	2,713,377	2,229,371
AB mutual funds	56,153	82,967
Accounts payable and accrued expenses	398,398	515,660
Accrued compensation and benefits	494,805	270,610
Debt	515,129	565,745
Liabilities	4,589,032	4,630,276
Commitments and contingencies (See Note 13)
Redeemable non-controlling interest	108,524	601,587
Capital:
General Partner	40,886	41,221
Limited partners: 270,222,414 and 268,659,333 units issued and outstanding	4,135,950	4,168,841
Receivables from affiliates	(11,705)	(11,494)
AB Holding Units held for long-term incentive compensation plans	(88,317)	(42,688)
Accumulated other comprehensive loss	(103,915)	(94,140)
Partners’ capital attributable to AB Unitholders	3,972,899	4,061,740
Non-redeemable non-controlling interests in consolidated entities	1,659	1,564
Total capital	3,974,558	4,063,304
Total liabilities, redeemable non-controlling interest and capital	8,672,114	9,295,167
Company-sponsored investment funds
Investments:
Cash and cash equivalents	23,693	326,518
Investments	301,625	1,246,283
Other assets	8,178	35,397
Payables:
Liabilities	6,972	698,101
Redeemable non-controlling interest	103,160	596,223
Capital:
Non-redeemable non-controlling interests in consolidated entities	$ 704	$ 757