ACQUISITIONS AND DISCONTINUED OPERATIONS - Results of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Discontinued Operations
Income (loss) from discontinued operations, net of tax	$ (9.4)	$ 316.4	$ (17.1)	$ 364.4
Discontinued Operations
Discontinued Operations
Income (loss) from discontinued operations	(11.7)	421.8	(21.1)	436.7
Income tax (provision) benefit	2.3	(105.4)	4.0	(72.3)
Income (loss) from discontinued operations, net of tax	(9.4)	316.4	(17.1)	364.4
Discontinued Operations | Transformer Solutions
Discontinued Operations
Income (loss) from discontinued operations		3.6		27.9
Income tax (provision) benefit		(33.8)		(6.8)
Income (loss) from discontinued operations, net of tax		(30.2)		21.1
Discontinued Operations | Transformer Solutions | Revision of Prior Period, Adjustment
Discontinued Operations
Income (loss) from discontinued operations	(0.6)	431.4	(0.8)	455.7
Income tax (provision) benefit	0.1	(106.6)	0.2	(79.6)
Income (loss) from discontinued operations, net of tax	(0.5)	324.8	(0.6)	376.1
Discontinued Operations | DBT
Discontinued Operations
Income (loss) from discontinued operations	(5.7)	(5.2)	(14.2)	(13.3)
Income tax (provision) benefit	0.8	0.1	2.3	1.6
Income (loss) from discontinued operations, net of tax	(4.9)	(5.1)	(11.9)	(11.7)
Discontinued Operations | Heat Transfer
Discontinued Operations
Income (loss) from discontinued operations	0.0	(0.1)	(0.2)	(0.3)
Income tax (provision) benefit	0.0	0.0	0.0	0.0
Income (loss) from discontinued operations, net of tax	0.0	(0.1)	(0.2)	(0.3)
Discontinued Operations | All other
Discontinued Operations
Income (loss) from discontinued operations	(5.4)	(4.3)	(5.9)	(5.4)
Income tax (provision) benefit	1.4	1.1	1.5	5.7
Income (loss) from discontinued operations, net of tax	$ (4.0)	$ (3.2)	$ (4.4)	$ 0.3