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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 9 Months Ended
Oct. 01, 2022
Oct. 01, 2022
Jul. 02, 2022
Apr. 02, 2022
Jul. 02, 2022
Oct. 01, 2022
Feb. 17, 2022
Pension Plan | UNITED STATES              
Employee Benefit Plans              
Benefit (charge) due to settlement $ (0.4) $ (0.4) $ (1.5)     $ (1.9)  
Projected benefit obligation         $ 10.0    
Defined benefit plan, net periodic benefit expense $ 2.0 $ 2.0     $ 2.3 $ 4.3  
Defined benefit plan, assumptions used calculating benefit obligation, discount rate   5.70% 4.86% 2.83%      
Defined benefit plan, assumptions used calculating benefit obligation, return on plan assets   5.00% 4.50% 3.25%      
SPX Postretirement Plans              
Employee Benefit Plans              
Consideration payable             $ 10.0
Benefit obligation, payment for settlement       $ 9.0      
Loss on settlement       0.7      
Benefit (charge) due to settlement       $ 0.4