DERIVATIVE FINANCIAL INSTRUMENTS (Narrative) (Details)	6 Months Ended	12 Months Ended
	Jun. 27, 2020 USD ($) derivative_instrument	Dec. 28, 2019 USD ($)
Derivative [Line Items]
Derivative gains, net of tax	$ (6,000,000.0)	$ 1,300,000
Net AOCI hedging component	(10,700,000)
Net current deferred losses expected to be realized in the next twelve months	(3,500,000)
Receive-Variable/Pay-Fixed Interest Rate Swap
Derivative [Line Items]
Notional amount of instrument	88,400,000
Foreign currency swap
Derivative [Line Items]
Notional amount of instrument	$ 250,000,000.0
Number of derivative instruments | derivative_instrument	2