Discontinued Operations (Schedule of Business Details and Line Items Comprising Discontinued Operations on Statements of Operations and Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from disposal of discontinued business, before income tax			$ 0.0	$ (0.4)
Income tax expense	$ 0.0	$ 0.0	0.0	1.7
Loss from disposal of discontinued businesses, net of tax	0.0	0.0	0.0	(2.1)
Net loss from discontinued operations	0.0	0.0	0.0	(2.1)
EMEA and Pacific Rim Business [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from disposal of discontinued business, before income tax	$ 0.0	$ 0.0	$ 0.0	(0.4)
Income tax expense				1.7
Loss from disposal of discontinued businesses, net of tax				(2.1)
Net loss from discontinued operations				$ (2.1)