Income taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Operating Loss Carryforwards
Income tax expense	$ 14.0	$ 1.0	$ 60.8	$ 25.9
Income from continuing operations before taxes	$ 69.2	$ 86.6	$ 240.1	$ 213.7
Reported effective income tax rate (as a percent)	20.20%	1.20%	25.30%	12.10%
Discrete tax (benefit) expense	$ (7.8)	$ (11.0)	$ (8.3)	$ (11.0)
Effective income tax rate reconciliation, tax credit, foreign, amount	6.5
Unrecognized tax benefits	3.2		3.2
Uncertain tax benefit interest accrual	1.9
Audit adjustments		12.9	13.8	(12.9)
Other net discrete tax expenses		$ 1.9		$ 1.9
Mexico and Poland
Operating Loss Carryforwards
Discrete tax (benefit) expense	5.7
Net deferred income tax assets	1.2		1.2
Deferred tax asset, net	6.9		6.9
Russia
Operating Loss Carryforwards
Discrete tax (benefit) expense			4.2
Unrecognized tax benefits	$ 3.2		3.2
Uncertain tax benefit interest accrual			3.4
Other net discrete tax expenses			$ 1.1