ACQUISITIONS AND DISCONTINUED OPERATIONS - Wind-Down of Heat Transfer Business - Assets and Liabilities of Discontinued Operations (Details) - SPX Heat Transfer Business - Discontinued Operations - USD ($) $ in Millions	Sep. 27, 2025	Dec. 31, 2024
ASSETS
Cash and equivalents	$ 0.1	$ 0.1
Other current assets	0.3	0.3
Total assets	0.4	0.4
LIABILITIES
Accounts payable	0.1	0.1
Total liabilities	$ 0.1	$ 0.1