INCOME TAXES - SCHEDULE OF DEFERRED TAX ASSET AND LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Post-retirement benefit obligations	$ 56,384	$ 52,915
Accrued expenses and other reserves	88,590	85,180
Stock-based compensation	19,304	30,448
Derivative instruments	16,864	17,423
Pension	3,952	8,921
Lease liabilities	64,988	12,284
Accrued trade promotion reserves	21,709	13,670
Net operating loss carryforwards	160,584	161,242
Capital loss carryforwards	26,022	26,670
Other	9,685	9,969
Gross deferred tax assets	468,082	418,722
Valuation allowance	(206,743)	(239,959)
Total deferred tax assets	261,339	178,763
Deferred tax liabilities:
Property, plant and equipment, net	161,449	144,044
Acquired intangibles	144,314	161,003
Lease ROU assets	48,419	0
Inventories	29,158	21,366
Other	46,984	28,044
Total deferred tax liabilities	430,324	354,457
Net deferred tax liabilities	(168,985)	(175,694)
Included in:
Non-current deferred tax assets, net	31,033	1,166
Non-current deferred tax liabilities, net	$ (200,018)	$ (176,860)