Net Income per Unit (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Unit [Abstract]

Schedule of Earnings Per Unit, Basic and Diluted

Basic net income per unit is derived by reducing net income for the 1% general partnership interest and dividing the remaining 99% by the basic weighted average number of units outstanding for each period. Diluted net income per unit is derived by reducing net income for the 1% general partnership interest and dividing the remaining 99% by the total of the diluted weighted average number of units outstanding for each period.

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(in thousands, except per unit amounts)
Net income attributable to AB Unitholders	$	135,103	$	124,501	$	275,040	$	290,785
Weighted average units outstanding – basic	268,302		269,720		268,391		270,787
Dilutive effect of compensatory options to buy AB Holding Units	430		650		482		534
Weighted average units outstanding – diluted	268,732		270,370		268,873		271,321
Basic net income per AB Unit	$	0.50	$	0.46	$	1.01	$	1.06
Diluted net income per AB Unit	$	0.50	$	0.46	$	1.01	$	1.06