ACQUISITIONS AND DISCONTINUED OPERATIONS - Results of Operations (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Discontinued Operations
Income (loss) from discontinued operations, net of tax	$ (6.1)	$ 44.2	$ (7.7)	$ 48.0
Income from discontinued operations, net of tax
Discontinued Operations
Income tax (provision) benefit		33.0		33.0
Discontinued Operations
Discontinued Operations
Income (loss) from discontinued operations	(7.3)	9.6	(9.4)	14.9
Income tax (provision) benefit	1.2	34.6	1.7	33.1
Income (loss) from discontinued operations, net of tax	(6.1)	44.2	(7.7)	48.0
Discontinued Operations \| Transformer Solutions
Discontinued Operations
Income (loss) from discontinued operations	0.1	12.8	(0.2)	24.3
Income tax (provision) benefit	0.0	29.9	0.1	27.0
Income (loss) from discontinued operations, net of tax	0.1	42.7	(0.1)	51.3
Discontinued Operations \| DBT
Discontinued Operations
Income (loss) from discontinued operations	(6.9)	(2.9)	(8.5)	(8.1)
Income tax (provision) benefit	1.1	0.3	1.5	1.5
Income (loss) from discontinued operations, net of tax	(5.8)	(2.6)	(7.0)	(6.6)
Discontinued Operations \| Heat Transfer
Discontinued Operations
Income (loss) from discontinued operations	(0.2)	(0.1)	(0.2)	(0.2)
Income tax (provision) benefit	0.0	0.0	0.0	0.0
Income (loss) from discontinued operations, net of tax	(0.2)	(0.1)	(0.2)	(0.2)
Discontinued Operations \| All other
Discontinued Operations
Income (loss) from discontinued operations	(0.3)	(0.2)	(0.5)	(1.1)
Income tax (provision) benefit	0.1	4.4	0.1	4.6
Income (loss) from discontinued operations, net of tax	$ (0.2)	4.2	$ (0.4)	3.5
Discontinued Operations \| Transformer Solutions Business
Discontinued Operations
Income (loss) from discontinued operations, net of tax		42.7		51.3
Excess tax basis		28.6		28.6
Previously unrecognized net operating losses		$ 4.4		$ 4.4

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