Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill, Estimated Useful Life	Indefinite
Amortizing intangible assets, Gross Carrying Amount	$ 308.7	$ 319.0
Amortizing intangible assets, Accumulated Amortization	232.2	208.7
Non-amortizing intangible assets	344.9	347.2
Total intangible assets	653.6	666.2
Business acquisition, goodwill	$ 167.0	160.7
Trademarks And Brand Names [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Non-amortizing intangible assets, Estimated Useful Life	Indefinite
Customer Relationships [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Gross Carrying Amount	$ 196.7	200.6
Amortizing intangible assets, Accumulated Amortization	$ 144.8	128.9
Customer Relationships [Member] | Minimum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	1 year
Customer Relationships [Member] | Maximum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	20 years
Developed Technology [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Gross Carrying Amount	$ 92.9	92.1
Amortizing intangible assets, Accumulated Amortization	$ 82.6	77.9
Developed Technology [Member] | Minimum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	13 years
Developed Technology [Member] | Maximum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	19 years
Software {Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	7 years
Amortizing intangible assets, Gross Carrying Amount	$ 9.1	9.1
Amortizing intangible assets, Accumulated Amortization	1.3
Trademarks And Brand Names [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Gross Carrying Amount	4.0	4.0
Amortizing intangible assets, Accumulated Amortization	$ 2.0	1.3
Trademarks And Brand Names [Member] | Minimum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	5 years
Trademarks And Brand Names [Member] | Maximum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	10 years
Non-compete Agreements [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Gross Carrying Amount	$ 5.6	6.3
Amortizing intangible assets, Accumulated Amortization	$ 1.4	0.4
Non-compete Agreements [Member] | Minimum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	3 years
Non-compete Agreements [Member] | Maximum [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	5 years
Other [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Amortizing intangible assets, Estimated Useful Life	Various
Amortizing intangible assets, Gross Carrying Amount	$ 0.4	6.9
Amortizing intangible assets, Accumulated Amortization	$ 0.1	$ 0.2