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Common Stock and Stock-Based Awards Plans - Stock-Based Compensation (Narrative) (Details) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
	May 25, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares of common stock for issuance	1.4
Additional shares available for issuance		2.9		2.9
Compensation cost recognized for stock-based awards		$ 4.8	$ 4.0	$ 13.3	$ 10.9
Income tax benefit recognized in the income statement for stock-based awards		$ 1.1	$ 0.9	3.1	2.5
Total cash received as a result of stock option exercises				0.5	0.3
Tax benefit realized as a result of stock option exercises and the vesting of other share-based awards				2.5	2.6
Total intrinsic value of stock options exercised				$ 0.4	$ 0.5
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of options				10 years
Performance-Based Restricted Stock Units [Member] \| Employee Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years