Condensed Consolidated Statements of Income (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Investment advisory and services fees	$ 443,837	$ 425,560
Bernstein research services	109,685	106,343
Distribution revenues	118,745	90,960
Dividend and interest income	4,446	4,406
Investment gains (losses)	6,951	30,958
Other revenues	26,300	24,285
Total revenues	709,964	682,512
Less: Interest expense	842	703
Net revenues	709,122	681,809
Expenses:
Employee compensation and benefits	301,235	302,543
Promotion and servicing:
Distribution-related payments	109,280	79,869
Amortization of deferred sales commissions	11,074	8,267
Other	50,992	49,734
General and administrative:
General and administrative	105,289	124,910
Real estate charges	638	9,269
Interest on borrowings	983	833
Amortization of intangible assets	5,433	5,139
Total expenses	584,924	580,564
Operating income	124,198	101,245
Income taxes	11,167	6,703
Net income	113,031	94,542
Net (loss) income of consolidated entities attributable to non-controlling interests	(1,485)	7,264
Net income attributable to AllianceBernstein Unitholders	$ 114,516	$ 87,278
Net income per AllianceBernstein Unit:
Basic (in dollars per share)	$ 0.41	$ 0.31
Diluted (in dollars per share)	$ 0.41	$ 0.31