DEBT - Balances Payable by Debt Instrument (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Total loan balance	$ 2,205.0	$ 186.3
Less: current portion of term loan (scheduled payments)	(24.0)	(15.0)
Less: net deferred financing costs	(27.5)	(2.2)
Total Long Term debt	2,153.5	169.1
Resolute Credit Agreement \| Resolute Revolver
Debt Instrument [Line Items]
Total loan balance	30.0
Resolute Credit Agreement \| Resolute Term Loan
Debt Instrument [Line Items]
Total loan balance	60.0
GPGI Holdings Revolver Facility
Debt Instrument [Line Items]
Total loan balance	15.0
GPGI Holdings Term Loan
Debt Instrument [Line Items]
Total loan balance	1,200.0
GPGI Holdings 5.625% Senior Secured Notes
Debt Instrument [Line Items]
Total loan balance	$ 900.0
Old GPGI Holdings Credit Facility
Debt Instrument [Line Items]
Total loan balance		$ 186.3

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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