LONG-TERM COMPENSATION PLANS (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Compensation Expense

For 2023, 2022 and 2021, compensation expense associated with the Company's long-term compensation plans was as follows:

	Year Ended December 31,
(dollars in millions)	2023		2022		2021
RSUs	$	9.3	$	17.4	$	39.6
Stock options	0.1		0.3		0.5
Total	$	9.4	$	17.7	$	40.1
Unrecognized compensation expense for awards expected to vest	$	16.5
Weighted average remaining vesting period (months)	26

Schedule of Restricted Stock Unit Award Activity in Payment Awards

At December 31, 2023, a total of 8,858,192 shares of common stock had been issued, and 4,256,974 RSUs and stock options were outstanding, under the 2013 Plan.

	Total	RSUs	Stock Options
Outstanding at December 31, 2022	4,289,420	3,901,630	387,790
Granted	1,185,157	1,185,157	—
Exercised/Issued	(1,038,192)	(1,035,087)	(3,105)
Forfeited	(179,411)	(179,411)	—
Outstanding at December 31, 2023	4,256,974	3,872,289	384,685

Issuance of Restricted Stock Units

The Company granted the following equity classified RSUs under the 2013 Plan:

Year of Issuance:	RSUs	Weighted Average Grant Date Fair Value		Weighted Average Vesting Period (months)
2023	1,185,157	$	19.75	27
2022	2,847,135	$	23.23	51
2021	852,890	$	18.02	28

Schedule of RSUs Outstanding

At December 31, 2023, the following equity classified RSUs were outstanding:

	December 31, 2023
Vesting Conditions:	Outstanding	Weighted Average Remaining Vesting Period (months)	Potential Additional Awards
Service-based	629,333	13	—
Performance-based	1,292,956	15	1,292,956
Performance-based awards deemed not probable	1,950,000	38	—
Total	3,872,289	26	1,292,956