DEBT AND FINANCING ARRANGEMENTS - Classification Of The Company Lease Obligations (Detail) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Operating Lease Obligations:
Other Current Liabilities (current portion)	$ 1.8	$ 1.9	$ 1.8
Other Noncurrent Liabilities (long-term portion)	3.8	3.7	3.9
Total Operating Lease Obligations	5.6	5.6	5.7
Capital Lease Obligations:
Other Current Liabilities (current portion)	0.1	0.1	0.1
Other Noncurrent Liabilities (long-term portion)	0.3	0.4	0.3
Total Capital Lease Obligations	0.4	0.5	0.4
Total Lease Obligations	6.0	$ 6.1	$ 6.1
Lease Obligations [Member]
Operating Lease Obligations:
Total Operating Lease Obligations	$ 5,554.0