Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Revenue subject to contracts with customers	$ 861,148	$ 841,442	$ 2,465,095	$ 2,497,449
Dividend and interest income	24,882	21,942	79,882	71,351
Investment gains (losses)	4,433	565	31,117	26,860
Other revenues	24,497	24,012	71,499	76,548
Total revenues	890,845	864,651	2,577,571	2,598,848
Less: Interest expense	12,978	14,475	46,443	36,147
Net revenues	877,867	850,176	2,531,128	2,562,701
Expenses:
Employee compensation and benefits	361,822	357,442	1,064,833	1,059,515
Promotion and servicing:
Amortization of deferred sales commissions	3,605	4,651	10,348	17,362
Trade execution, marketing, T&E and other	53,814	50,793	161,012	164,095
General and administrative:
General and administrative	117,056	107,526	355,084	337,596
Real estate charges (credits)	153	(155)	701	6,490
Contingent payment arrangements	829	52	1,712	157
Interest on borrowings	2,802	2,711	10,775	7,952
Amortization of intangible assets	7,277	6,965	21,536	20,753
Total expenses	675,084	636,357	1,975,974	1,936,747
Operating income	202,783	213,819	555,154	625,954
Income taxes	10,827	9,419	29,959	32,782
Net income	191,956	204,400	525,195	593,172
Net income of consolidated entities attributable to non-controlling interests	4,145	726	22,018	23,637
Net income attributable to AB Unitholders	$ 187,811	$ 203,674	$ 503,177	$ 569,535
Net income per AB Unit:
Basic (in dollars per unit)	$ 0.69	$ 0.75	$ 1.86	$ 2.09
Diluted (in dollars per unit)	$ 0.69	$ 0.75	$ 1.86	$ 2.09
Investment advisory and services fees
Revenues:
Revenue subject to contracts with customers	$ 616,384	$ 610,063	$ 1,769,342	$ 1,782,287
Bernstein research services
Revenues:
Revenue subject to contracts with customers	102,014	103,581	298,240	324,192
Distribution related
Revenues:
Revenue subject to contracts with customers	118,635	104,488	327,491	317,610
Promotion and servicing:
Distribution-related payments	$ 127,726	$ 106,372	$ 349,973	$ 322,827