SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Components of Other Net Reflected in Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018	Dec. 29, 2017
Other, net:
Foreign exchange loss	$ (2.2)	$ (8.2)	$ (3.4)
Cash surrender value of life insurance policies	4.4	(1.3)	2.4
Net periodic pension benefit	2.4	5.1	0.2
Loss on extinguishment of debt	0.0	(4.6)	0.0
Other	(1.6)	(1.2)	0.2
Total other, net	$ 3.0	$ (10.2)	$ (0.6)