GOODWILL AND OTHER INTANGIBLE ASSETS (Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Intangible Assets
Gross carrying amount, amortized intangibles	$ 163.8	$ 148.2
Accumulated amortization	(54.2)	(45.4)
Gross carrying amount, total intangibles	214.5	194.1
Amortization expense, intangible assets	9.1	8.0	7.2
Future Amortization Expense
2015	8.9
2016	8.9
2017	8.6
2018	8.6
2019	8.3
Patents
Intangible Assets
Gross carrying amount, amortized intangibles	7.6	7.8
Accumulated amortization	(6.1)	(5.9)
Finite-lived intangible asset, useful life (in years)	17 years
Supply Agreements
Intangible Assets
Gross carrying amount, amortized intangibles	4.4	4.4
Accumulated amortization	(4.4)	(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	(4.3)	(3.8)
Finite-lived intangible asset, useful life (in years)	15 years
Customer Relationships
Intangible Assets
Gross carrying amount, amortized intangibles	140.2	125.1
Accumulated amortization	(36.5)	(29.7)
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	2.9	2.1
Accumulated amortization	(1.7)	(0.4)
Finite-lived intangible asset, useful life (in years)	5 years
Other
Intangible Assets
Gross carrying amount, amortized intangibles	1.2	1.3
Accumulated amortization	(1.2)	(1.2)
Finite-lived intangible asset, useful life (in years)	8 years
Trade Names
Intangible Assets
Gross carrying amount, unamortized intangibles	$ 50.7	$ 45.9