Retirement Plans - Summary of Change in Benefit Obligations, Change in Plan Assets and Unfunded Status of DB Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Jan. 02, 2021	Dec. 28, 2019
Change in Projected Benefit Obligation
Projected benefit obligation at beginning of year	$ 21.7	$ 18.7
Plan amendment		0.4
Service cost	1.0	0.8	$ 0.8
Interest cost	0.4	0.5	0.4
Plan participant contributions	0.3	0.3
Benefit payments	(1.5)	(1.9)
Actuarial losses (gains)	0.8	2.3
Curtailment gains	(0.9)
Translation losses	1.1	0.6
Projected benefit obligation at end of year	22.9	21.7	18.7
Change in Plan Assets
Plan assets beginning of year	14.0	12.7
Employer contributions	0.8	0.8
Plan participant contributions	0.3	0.3
Benefit payments	(1.2)	(1.4)
Settlement gains		0.2
Curtailment losses	(0.6)
Expected return on plan assets	0.2
Actual return on plan assets	1.1	1.2
Translation gains	0.5	0.2
Fair value at end of year	15.1	14.0	12.7
Funded Status of Plan
Projected benefit obligation	(21.7)	(21.7)	(18.7)	$ (22.9)	$ (21.7)
Fair value of plan assets	14.0	14.0	12.7	15.1	14.0
Unfunded status				(7.8)	(7.7)
U.S.
Change in Projected Benefit Obligation
Projected benefit obligation at beginning of year	8.6	7.9
Plan amendment		0.0
Service cost	0.0	0.0	0.0
Interest cost	0.3	0.3	0.3
Plan participant contributions	0.0	0.0
Benefit payments	(0.4)	(0.4)
Actuarial losses (gains)	1.0	0.8
Curtailment gains	0.0
Translation losses	0.0	0.0
Projected benefit obligation at end of year	9.5	8.6	7.9
Change in Plan Assets
Plan assets beginning of year	8.1	6.9
Employer contributions	0.3	0.3
Plan participant contributions	0.0	0.0
Benefit payments	(0.4)	(0.4)
Settlement gains		0.0
Curtailment losses	0.0
Expected return on plan assets	0.0
Actual return on plan assets	1.1	1.3
Translation gains	0.0	0.0
Fair value at end of year	9.1	8.1	6.9
Funded Status of Plan
Projected benefit obligation	(8.6)	(8.6)	(7.9)	(9.5)	(8.6)
Fair value of plan assets	8.1	8.1	6.9	9.1	8.1
Unfunded status				(0.4)	(0.5)
International
Change in Projected Benefit Obligation
Projected benefit obligation at beginning of year	13.1	10.8
Plan amendment		0.4
Service cost	1.0	0.8	0.8
Interest cost	0.1	0.2	0.1
Plan participant contributions	0.3	0.3
Benefit payments	(1.1)	(1.5)
Actuarial losses (gains)	(0.2)	1.5
Curtailment gains	(0.9)
Translation losses	1.1	0.6
Projected benefit obligation at end of year	13.4	13.1	10.8
Change in Plan Assets
Plan assets beginning of year	5.9	5.8
Employer contributions	0.5	0.5
Plan participant contributions	0.3	0.3
Benefit payments	(0.8)	(1.0)
Settlement gains		0.2
Curtailment losses	(0.6)
Expected return on plan assets	0.2
Actual return on plan assets	0.0	(0.1)
Translation gains	0.5	0.2
Fair value at end of year	6.0	5.9	5.8
Funded Status of Plan
Projected benefit obligation	(13.4)	(10.8)	(10.8)	(13.4)	(13.1)
Fair value of plan assets	$ 5.9	$ 5.9	$ 5.8	6.0	5.9
Unfunded status				$ (7.4)	$ (7.2)