VALUATION AND QUALIFYING ACCOUNTS - Valuation Allowance of Deferred Tax Assets (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	$ 266,300,000	$ 326,100,000	$ 264,100,000
Additions		0
Deductions	137,400,000	83,000,000	5,300,000
Ending Balance	129,500,000	266,300,000	326,100,000
CUSA
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	218,500,000	283,200,000	240,900,000
Deductions	131,700,000	77,200,000	4,900,000
Ending Balance	$ 83,700,000	$ 218,500,000	$ 283,200,000