Retirement Plans - Summary of Change in Benefit Obligations, Change in Plan Assets and Unfunded Status of Three Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013	Jan. 02, 2016	Jan. 03, 2015
Change in Projected Benefit Obligation
Projected benefit obligation at beginning of year	$ 77.9	$ 62.5
Transfer in		10.5
Service cost		0.2	$ 0.5
Interest cost	2.8	2.7	2.4
Benefit payments	(1.7)	(1.9)
Actuarial (gains) losses	(5.5)	8.5
Settlement losses		0.1
Curtailment gains		(0.9)
Translation gains	(2.8)	(3.8)
Projected benefit obligation at end of year	70.7	77.9	62.5
Change in Plan Assets
Plan assets beginning of year	59.1	49.6
Transfer in		7.1
Employer contributions	3.0	2.2
Benefit payments	(1.6)	(1.8)
Actual return on plan assets	(0.4)	4.7
Translation gains	(2.2)	(2.7)
Fair value at end of year	57.9	59.1	49.6
Funded Status of Plan
Projected benefit obligation	(77.9)	(62.5)	(62.5)	$ (70.7)	$ (77.9)
Fair value of plan assets	$ 59.1	$ 49.6	$ 49.6	57.9	59.1
Unfunded status				$ (12.8)	$ (18.8)