VALUATION AND QUALIFYING ACCOUNTS - Valuation Allowance of Deferred Tax Assets (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	$ 326,100,000	$ 264,100,000	$ 203,600,000
Additions	0
Deductions	83,000,000	5,300,000	4,300,000
Ending Balance	266,300,000	326,100,000	264,100,000
CUSA
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	283,200,000	240,900,000	203,600,000
Deductions	77,200,000	4,900,000	10,900,000
Ending Balance	$ 218,500,000	$ 283,200,000	$ 240,900,000