PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - SCHEDULE OF COMPONENTS OF NET PERIODIC BENEFIT COST (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 5,256	$ 5,431	$ 16,178	$ 16,274
Interest cost	4,785	6,125	13,511	20,081
Expected return on plan assets	(12,249)	(13,243)	(36,861)	(39,553)
Amortization of prior service (credit) cost	(1,536)	(1,823)	(4,607)	(5,474)
Amortization of net loss (gain)	4,585	7,026	16,005	20,190
Settlement loss	5,408	1,282	12,848	4,935
Total net periodic benefit cost	6,249	4,798	17,074	16,453
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	45	39	135	119
Interest cost	964	1,508	2,893	4,520
Expected return on plan assets	0	0	0	0
Amortization of prior service (credit) cost	0	75	0	225
Amortization of net loss (gain)	0	(10)	0	(29)
Settlement loss	0	0	0	0
Total net periodic benefit cost	$ 1,009	$ 1,612	$ 3,028	$ 4,835