INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Aug. 12, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosures [Line Items]
Effective income tax rate reconciliation, percent	14700.00%	6.20%		34.00%	54.60%
Unrecognized tax benefits	$ 52.6	$ 52.7	$ 52.6	$ 52.1	$ 55.1	$ 36.8
Income tax penalties and interest accrued	1.4		1.4	1.3
Operating loss carryforwards	483.3		483.3
NOL deferred tax asset	129.1		129.1
Operating loss carryforwards, set to expire	133.9		133.9
Operating loss carryforwards, no expiration	349.4		349.4
Increase (decrease), change in amount			(234.7)	206.5
Income tax expense (benefit)	(14.7)	$ 90.4		$ 149.2	$ 27.7
Deferred tax liability not recognized, amount of unrecognized deferred tax liability	532.3		532.3
U.S. Foreign And State Authority
Income Tax Disclosures [Line Items]
Income tax expense (benefit)			245.3
Income tax effects allocated directly to equity			(10.6)
Unrecognized Tax Benefit Impact on ETR
Income Tax Disclosures [Line Items]
Unrecognized tax benefits	12.6		12.6
Unrecognized Tax Benefit PY Offset by VA
Income Tax Disclosures [Line Items]
Unrecognized tax benefits	$ 40.0		$ 40.0