Long-term Incentive Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity

Repurchases of AB Holding Units for the three and six months ended June 30, 2020 and 2019 consisted of the following:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
	(in millions)
Total amount of AB Holding Units Purchased (1)	1.3		—		2.2		2.0
Total Cash Paid for AB Holding Units Purchased(1)	$	27.8	$	—	$	47.6	$	58.6
Open Market Purchases of AB Holding Units Purchased (2)	1.3		—		2.2		1.9
Total Cash Paid for Open Market Purchases of AB Holding Units (2)	$	27.8	$	—	$	45.1	$	55.2

^{(1) Purchased on a trade date basis.} 

^{(2) The remainder related to purchases of AB Holding Units from employees to fulfill statutory tax withholding requirements at the time of delivery of long-term incentive compensation awards.}