Equity

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Equity

Equity

A summary of shares repurchased under our securities repurchase program, and shares acquired, is as follows:

	Year Ended December 31,
	2021		2020		2019
Shares repurchased (1)	3,112,404		890,195		3,871,887
Aggregate purchase price	$	280.6	$	29.4	$	169.2
Average purchase price per share	$	90.13	$	33.06	$	43.71
Shares acquired (2)	149,176		137,541		114,949
Aggregate purchase price	$	12.9	$	5.0	$	4.9
Average purchase price per share	$	86.78	$	36.34	$	42.72

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(1) Shares were repurchased under our securities repurchase program. We had $230.4 million in repurchase authorization remaining under the repurchase program as of December 31, 2021.

(2) Shares were acquired from employees in connection with a net share settlement feature of employee equity awards.