Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenue subject to contracts with customers	$ 907,320	$ 769,186
Dividend and interest income	20,465	27,346
Investment (losses) gains	(44,306)	15,735
Other revenues	25,511	22,206
Total revenues	883,475	812,625
Less: Interest expense	9,319	17,163
Net revenues	874,156	795,462
Expenses:
Employee compensation and benefits	362,272	339,309
Promotion and servicing:
Amortization of deferred sales commissions	5,526	3,502
Trade execution, marketing, T&E and other	55,610	49,648
General and administrative	122,267	117,848
Contingent payment arrangements	793	54
Interest on borrowings	2,834	3,983
Amortization of intangible assets	6,486	6,974
Total expenses	695,933	627,311
Operating income	178,223	168,151
Income taxes	9,474	8,921
Net income	168,749	159,230
Net (loss) income of consolidated entities attributable to non-controlling interests	(25,571)	10,116
Net income attributable to AB Unitholders	$ 194,320	$ 149,114
Net income per AB Unit:
Basic (in dollars per unit)	$ 0.71	$ 0.55
Diluted (in dollars per unit)	$ 0.71	$ 0.55
Investment advisory and services fees
Revenues:
Revenue subject to contracts with customers	$ 621,725	$ 556,594
Bernstein research services
Revenues:
Revenue subject to contracts with customers	129,223	90,235
Distribution related
Revenues:
Revenue subject to contracts with customers	130,857	100,509
Promotion and servicing:
Distribution-related payments	$ 140,145	$ 105,993