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Accounting Policies - Stock Based Compensation (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($) $ / shares
Stock-based compensation
Total unrecognized compensation costs related to unvested stock-based compensation arrangements	$ 18.7	$ 18.7	$ 18.7	$ 18.7	$ 18.7
Total weighted average remaining term of unrecognized compensation costs	1 year 4 months 17 days
Compensation cost recognized			18.4			$ 22.9	$ 12.7
Number of Reportable Segments		3			3
Impact on both basic and diluted net income per common share for recognition of total stock-based compensation expense (in dollars per share) \| $ / shares				$ 0.43		$ 0.53	$ 0.30
Cost of goods sold.
Stock-based compensation
Compensation cost recognized			1.3			$ 1.4	$ 0.9
Selling, general and administrative expenses
Stock-based compensation
Compensation cost recognized			17.1			21.5	11.8
Other Stock-based Plans
Stock-based compensation
Tax benefit recorded for the compensation expense			$ 2.8			$ 3.7	$ 2.1