Commitments and contingent liabilities (Detail) $ in Millions	3 Months Ended
	Mar. 27, 2022 USD ($)
Loss Contingencies [Line Items]
Estimated litigation liability	$ 0.2
Minimum
Loss Contingencies [Line Items]
Estimated time frame over which accrued amounts may be paid out	10 years
Minimum | China Investigation Penalties For Tariffs And Related Interest
Loss Contingencies [Line Items]
Loss contingency accrual, unpaid tariff, penalties percentage	30.00%
Loss contingency, estimate of possible loss	$ 3.0
Maximum
Loss Contingencies [Line Items]
Estimated time frame over which accrued amounts may be paid out	15 years
Maximum | China Investigation Penalties For Tariffs And Related Interest
Loss Contingencies [Line Items]
Loss contingency accrual, unpaid tariff, penalties percentage	200.00%
Loss contingency, estimate of possible loss	$ 20.0
Accrued Liabilities
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	2.0
Other Liability
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 4.2