Condensed Statements of Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Equity in net income attributable to AB Unitholders	$ 69,914	$ 52,638
Income taxes	7,655	6,199
Net income	$ 62,259	$ 46,439
Net income per unit:
Basic (in dollars per unit)	$ 0.63	$ 0.49
Diluted (in dollars per unit)	$ 0.63	$ 0.49

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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