GOODWILL AND OTHER INTANGIBLE ASSETS (Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Intangible Assets
Gross carrying amount, amortized intangibles	$ 151.0	$ 163.8
Accumulated amortization	(56.0)	(54.2)
Amortization expense, intangible assets	8.6	9.1	$ 8.0
Future Amortization Expense
2016	8.4
2017	8.3
2018	8.3
2019	8.2
2020	8.1
Gross carrying amount, total intangibles	197.4	214.5
Patents
Intangible Assets
Gross carrying amount, amortized intangibles	7.4	7.6
Accumulated amortization	$ (6.2)	(6.1)
Finite-lived intangible asset, useful life (in years)	17 years
Supply Agreements
Intangible Assets
Gross carrying amount, amortized intangibles	$ 0.0	4.4
Accumulated amortization	$ 0.0	(4.4)
Finite-lived intangible asset, useful life (in years)	6 years
Technology
Intangible Assets
Gross carrying amount, amortized intangibles	$ 7.5	7.5
Accumulated amortization	$ (4.8)	(4.3)
Finite-lived intangible asset, useful life (in years)	15 years
Customer Relationships
Intangible Assets
Gross carrying amount, amortized intangibles	$ 132.6	140.2
Accumulated amortization	$ (42.3)	(36.5)
Customer Relationships | Minimum
Intangible Assets
Finite-lived intangible asset, useful life (in years)	13 years
Customer Relationships | Maximum
Intangible Assets
Finite-lived intangible asset, useful life (in years)	20 years
Software
Intangible Assets
Gross carrying amount, amortized intangibles	$ 2.5	2.9
Accumulated amortization	$ (1.7)	(1.7)
Finite-lived intangible asset, useful life (in years)	5 years
Other
Intangible Assets
Gross carrying amount, amortized intangibles	$ 1.0	1.2
Accumulated amortization	$ (1.0)	(1.2)
Finite-lived intangible asset, useful life (in years)	8 years
Trade Names
Intangible Assets
Gross carrying amount, unamortized intangibles	$ 46.4	$ 50.7