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Restructuring and Restructuring Related Charges (Summary Of Restructuring-Related Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Amount of total that represents cash charges	$ 1.4	$ (0.3)	$ 7.6
Inventory obsolescence and other	0.0	0.0	0.3
Total restructuring and restructuring-related costs	$ 1.4	$ (0.3)	7.9
COVID-19
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring costs			$ 6.5

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Inventory Obsolescence And Other Costs Net

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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