Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity - Components (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 616.8	$ 590.0
Other comprehensive income (loss) before reclassifications	(0.2)	(2.1)
Tax (expense) or benefit	0.0	(0.1)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(0.0)	(3.3)
Ending balance	741.1	606.4
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(8.0)	(6.8)
Ending balance	(8.2)	(12.2)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(6.4)	(0.7)
Other comprehensive income (loss) before reclassifications	(0.2)	(2.2)
Tax (expense) or benefit	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0.0	(3.3)
Ending balance	(6.5)	(6.2)
Unrealized Gains (Losses) on Debt Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(0.6)	0.1
Other comprehensive income (loss) before reclassifications	(0.0)	(1.0)
Tax (expense) or benefit	0.0	0.2
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0.1	(0.0)
Ending balance	(0.6)	(0.7)
Pension and Post-retirement Liabilities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1.1)	(5.4)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Tax (expense) or benefit	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0.0	0.0
Ending balance	(1.1)	(5.4)
Derivative Financial Instrument
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	0.1	(0.7)
Other comprehensive income (loss) before reclassifications	0.0	1.1
Tax (expense) or benefit	0.0	(0.3)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(0.1)	0.0
Ending balance	$ 0.0	$ 0.2