ACQUISITIONS AND DISCONTINUED OPERATIONS - Wind-Down of Heat Transfer Business - Assets and Liabilities of Discontinued Operations (Details) - Discontinued Operations - SPX Heat Transfer Business - USD ($) $ in Millions	Mar. 30, 2024	Dec. 31, 2023
ASSETS
Other current assets	$ 0.3	$ 0.3
Other assets	0.0	0.1
Total assets of DBT	0.3	0.4
LIABILITIES
Accounts payable	0.1	0.2
Total liabilities of DBT	$ 0.1	$ 0.2