PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2021 USD ($) processingFacility	Sep. 27, 2020 USD ($)	Sep. 26, 2021 USD ($) processingFacility	Sep. 27, 2020 USD ($)
Property, Plant and Equipment [Abstract]
Depreciation	$ 86,300	$ 77,700	$ 256,900	$ 231,600
Payments for capital projects			280,820	242,603
Transfer of property, plant and equipment			324,100	190,100
Proceeds from property disposals	1,500	11,800	22,896	21,715
(Loss (gain) on property disposals	$ (1,500)	$ 6,400	$ 3,605	$ 8,009
Processing plants | processingFacility	2		2
Idled assets, carrying amount	$ 41,800		$ 41,800
Idled assets, depreciable value	205,800		205,800
Idled assets, accumulated depreciation	$ 164,000		$ 164,000