Long-term Incentive Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

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

Repurchases of AB Holding Units for the three and nine months ended September 30, 2021 and 2020 consisted of the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
	(in millions)
Total amount of AB Holding Units Purchased (1)	1.0		0.3		2.9		2.5
Total Cash Paid for AB Holding Units Purchased (1)	$	50.0	$	6.8	$	125.7	$	54.4
Open Market Purchases of AB Holding Units Purchased (2)	0.9		0.2		2.3		2.4
Total Cash Paid for Open Market Purchases of AB Holding Units (2)	$	44.9	$	6.7	$	103.7	$	51.8

(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 award.