LONG-TERM DEBT - Maturities of Long-Term Debt, Excluding Unamortized Debt Issuance Costs (Detail) $ in Millions	Dec. 31, 2023 USD ($)
Debt Disclosure [Abstract]
2024	$ 7.8
2025	617.7
2026	412.7
2027	7.7
2028	772.7
Thereafter	613.5
Total	$ 2,432.1	[1]

[1] The only difference between the long-term debt maturity payments for Holdings, as presented above, and those for CUSA is the $460.0 repayment of Holdings’ 4.50% Convertible Senior Notes in 2025.