Postretirement Plans - Summary of Components of Net Periodic Benefit Costs and Other Amounts Recognized in Other Comprehensive Income (Loss) (Detail) - U.S. Postretirement Health Care Plans - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Net periodic benefit cost:
Interest cost	$ 1.2	$ 1.1	$ 1.5
Expected return on plan assets	(0.6)	(0.6)	(0.6)
Net periodic benefit cost (credit)	0.6	0.5	0.9
Changes in benefit obligations recognized in OCI, net of tax:
Net (gain) loss	$ (4.1)	$ (1.0)	$ 1.9

Postretirement Plans - Summary of Components of Net Periodic Benefit Costs and Other Amounts Recognized in Other Comprehensive Income (Loss) (Detail) - U.S. Postretirement Health Care Plans - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2022

Jan. 01, 2022

Jan. 02, 2021

Net periodic benefit cost:

Interest cost

$ 1.2

$ 1.1

$ 1.5

Expected return on plan assets

(0.6)

Net periodic benefit cost (credit)