STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation Expense Resulting from Stock Option Awards, RSUs, PSUs, and ESPP and Canada ESPP

The following table presents the total stock-based compensation expense classified in SG&A resulting from stock option awards, RSUs, PSUs and ESPP included in the Consolidated Statements of (Loss) Income:

In millions
	Year Ended December 31,
	2023		2022		2021
Stock options	$	0.3	$	0.8	$	2.0
RSUs	19.7		17.1		14.8
PSUs	12.7		6.5		9.6
ESPP	0.7		0.7		0.7
Total	$	33.4	$	25.1	$	27.1

Stock Option Activity

Stock option activity was summarized as follows:

	Number of Options	Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Life	Total Aggregate Intrinsic Value
				(in years)	(in millions)
Outstanding as of January 1, 2023	1,168,670	$	94.61
Granted	—	$	—
Exercised	(1,242)	$	48.59
Forfeited	(434)	$	62.04
Cancelled or expired	(441,449)	$	113.58
Outstanding as of December 31, 2023	725,545	$	84.20	1.74	$	0.3
Exercisable as of December 31, 2023	717,262	$	84.61	1.72	$	0.3

Intrinsic Value of Options Exercised

The following table sets forth the intrinsic value of options exercised:

In millions
	Year Ended December 31,
	2023		2022		2021
Total exercise intrinsic value of options exercised	$	—	$	—	$	1.1

Summary of RSU Activity

RSUs activity was as follows:

	Number of Units	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life	Total Aggregate Intrinsic Value
				(in years)	(in millions)
Non-vested as of January 1, 2021	547,235	$	54.96
Granted	253,860	$	68.71
Vested and Released	(186,342)	$	55.26
Forfeited	(58,431)	$	28.23
Non-vested as of December 31, 2021	556,322	$	60.79
Granted	330,920	$	56.15
Vested and Released	(250,064)	$	59.49
Forfeited	(53,417)	$	59.26
Non-vested as of December 31, 2022	583,761	$	58.85
Granted	427,278	$	42.83
Vested and Released	(270,166)	$	58.03
Forfeited	(72,199)	$	50.10
Non-vested as of December 31, 2023	668,674	$	49.68	0.92	$	33.1

Summary of PSU Activity

PSU activity was as follows:

	Number of Units	Weighted Average Grant Date Fair Value
Non-vested as of January 1, 2021	316,059	$	57.79
Granted	116,720	$	57.66
Vested and Released	(88,269)	$	57.61
Forfeited	(22,168)	$	60.60
Non-vested as of December 31, 2021	322,342	$	57.79
Granted	151,123	$	56.30
Vested and Released	(74,651)	$	57.08
Forfeited	(15,574)	$	57.08
Non-vested as of December 31, 2022	383,240	$	56.76
Granted	205,009	$	43.35
Vested and Released	(100,250)	$	56.32
Forfeited (1)	(37,224)	$	54.98
Non-vested as of December 31, 2023	450,775	$	50.91

(1)Includes 26,319 shares cancelled in connection with the vesting of awards in 2023 due to above-target and below target performance, respectively, in accordance with the terms of the award.