Benefits Expected to be Paid from Plans Assets (Parenthetical) (Detail) - Includes Plan No 1 and No 2 Single Lump Sum - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Lump Sums Plan No. 1
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Distributions from existing plan assets			$ 7.0
Lump Sums Plan No. 1
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Distributions from existing plan assets		$ 104.5
Lump Sums Plan No. 2
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Distributions from existing plan assets			$ 0.7
Lump Sums Plan No. 2
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Distributions from existing plan assets		$ 0.4
Lump Sums Plan No. 2
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Distributions from existing plan assets	$ 1.7