Commitments and contingent liabilities - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Feb. 17, 2021	Sep. 26, 2021	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Money damages sought	$ 66.9
Reversal accrued penalties and interest		$ 3.0
Essential Medical Inc
Loss Contingencies [Line Items]
Payment for contingent consideration liability			$ 17.4
Minimum
Loss Contingencies [Line Items]
Estimated time frame over which accrued amounts may be paid out			10 years
Minimum | China investigation, unpaid tariffs
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, unpaid tariffs
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]
Waste disposed accrued liability			2.0	$ 1.6
Contingency reserve for litigation			0.2	0.3
Other Liabilities
Loss Contingencies [Line Items]
Waste disposed accrued liability			$ 4.1	$ 5.2