INCOME TAXES - SCHEDULE OF DEFERRED TAX ASSET AND LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Post-retirement benefit obligations	$ 58,059	$ 56,384
Accrued expenses and other reserves	86,412	88,590
Stock-based compensation	18,831	19,304
Derivative instruments	15,550	16,864
Pension	8,203	3,952
Lease liabilities	64,192	64,988
Accrued trade promotion reserves	25,877	21,709
Net operating loss carryforwards	154,445	160,584
Capital loss carryforwards	15,401	26,022
Other	10,027	9,685
Gross deferred tax assets	456,997	468,082
Valuation allowance	(193,310)	(206,743)
Total deferred tax assets	263,687	261,339
Deferred tax liabilities:
Property, plant and equipment, net	180,633	161,449
Acquired intangibles	156,439	144,314
Lease ROU assets	46,778	48,419
Inventories	21,086	29,158
Other	58,410	46,984
Total deferred tax liabilities	463,346	430,324
Net deferred tax liabilities	(199,659)	(168,985)
Included in:
Non-current deferred tax assets, net	(29,369)	(31,033)
Non-current deferred tax liabilities, net	$ (229,028)	$ (200,018)