Condensed Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 42,687	$ 44,134	$ 136,496	$ 123,147
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in net income attributable to AB Unitholders	(48,988)	(49,876)	(155,013)	(139,714)
Cash distributions received from AB			168,505	154,454
Changes in assets and liabilities:
(Increase) in other assets			(95)	0
(Decrease) in other liabilities			(105)	(220)
Net cash provided by operating activities			149,788	137,667
Cash flows from investing activities:
Investments in AB with proceeds from exercise of compensatory options to buy AB Holding Units			(8,979)	(12,849)
Net cash used in investing activities			(8,979)	(12,849)
Cash flows from financing activities:
Cash distributions to Unitholders			(150,521)	(139,078)
Capital contributions from AB			733	1,411
Proceeds from exercise of compensatory options to buy AB Holding Units			8,979	12,849
Net cash used in financing activities			(140,809)	(124,818)
Change in cash and cash equivalents			0	0
Cash and cash equivalents as of beginning of period			0	0
Cash and cash equivalents as of end of period	$ 0	$ 0	$ 0	$ 0