INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 03, 2020	Dec. 28, 2018
Income Tax Disclosure [Abstract]
Deferred compensation and other postretirement benefits	$ 38.4	$ 36.0
Foreign NOL carryforwards and other	26.1	28.1
Operating lease obligations	67.6	1.6
Accrued expenses and other	9.1	8.4
Inventory reserves	8.7	8.5
Unrealized foreign exchange	0.5	2.7
Allowance for doubtful accounts	6.5	7.9
Federal and state credits	54.5	50.6
Gross deferred tax assets	211.4	143.8
Property, equipment, intangibles and other	(74.8)	(90.1)
Operating lease assets	(66.5)	0.0
Gross deferred tax liabilities	(141.3)	(90.1)
Deferred tax assets, net of deferred tax liabilities	70.1	53.7
Valuation Allowance	(38.3)	(79.1)
Net deferred tax assets	$ 31.8
Net deferred tax liabilities		$ (25.4)