COMMITMENTS AND CONTINGENCIES (Narrative) (Details)			1 Months Ended	12 Months Ended
	Jan. 27, 2017 producer	Dec. 12, 2012 USD ($)	Oct. 13, 2016 producer claim	Dec. 25, 2016 USD ($)	Dec. 27, 2015 USD ($)	Dec. 28, 2014 USD ($)	Dec. 27, 2009 USD ($) settlement_agreement
Other Commitments [Line Items]
Outstanding purchase contracts, payable in 2017				$ 178,000,000
Outstanding purchase contracts, payable in 2018				500,000
Outstanding purchase contracts, payable in 2019				0
Rental expense for operating leases				32,500,000	$ 25,300,000	$ 15,200,000
Maximum potential amount of residual value guarantees				$ 34,700,000
New claims filed - class action lawsuits | claim			10
Number of other producers named in lawsuit | producer			13
Subsequent Event [Member]
Other Commitments [Line Items]
Number of other producers named in lawsuit | producer	10
Due To Internal Revenue Service [Member]
Other Commitments [Line Items]
Asserted claims		$ 29,300,000					$ 74,700,000
Number of Stipulations of Settled Issues agreements | settlement_agreement							2
Minimum [Member]
Other Commitments [Line Items]
Operating leases, terms of lease maturities				1 year
Maximum [Member]
Other Commitments [Line Items]
Operating leases, terms of lease maturities				10 years