Commitments and contingent liabilities (Detail) $ in Millions	6 Months Ended
	Jul. 02, 2023 USD ($)
Loss Contingencies [Line Items]
Estimated litigation liability	$ 0.6
Italian Parliament Legislation
Loss Contingencies [Line Items]
Loss contingency accrual	12.6
Loss contingency, loss in period	1.5
Loss contingency, estimate of possible loss	$ 18.6
Minimum
Loss Contingencies [Line Items]
Estimated time frame over which accrued amounts may be paid out	10 years
Maximum
Loss Contingencies [Line Items]
Estimated time frame over which accrued amounts may be paid out	15 years
Accrued liabilities
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 2.5
Other liability
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 3.6