INCOME TAXES - Summary of Current and Deferred Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal	$ 29.9	$ 2.2	$ 1.9
Foreign	15.2	14.2	9.2
State	5.6	2.9	1.2
Total current expense	50.7	19.3	12.3
Deferred:
Federal	(19.9)	15.8	(2.7)
Foreign	(36.0)	(5.7)	(2.4)
State	(54.9)	0.5	(4.2)
Total deferred taxes	(110.8)	10.6	(9.3)
Income taxes	(60.1)	29.9	3.0
CUSA
Current:
Federal	29.5	2.8	1.9
Foreign	15.2	14.2	9.2
State	6.6	2.9	1.2
Total current expense	51.3	19.9	12.3
Deferred:
Federal	(20.3)	13.8	(16.2)
Foreign	(36.0)	(5.7)	(2.4)
State	(50.8)	0.4	(6.8)
Total deferred taxes	(107.1)	8.5	(25.4)
Income taxes	$ (55.8)	$ 28.4	$ (13.1)