Acquisitions, Goodwill, and Other Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross	$ 610.9	$ 313.3
Accumulated Amortization	(277.5)	(239.4)
Net	$ 333.4	$ 73.9
Weighted Average Useful Life (years)	10 years	10 years
Intellectual property [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 66.7	$ 30.8
Accumulated Amortization	(32.9)	(29.2)
Net	$ 33.8	$ 1.6
Weighted Average Useful Life (years)	8 years	9 years
Customer-related assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 377.9	$ 153.0
Accumulated Amortization	(130.3)	(111.7)
Net	$ 247.6	$ 41.3
Weighted Average Useful Life (years)	11 years	12 years
Supplier relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 0.2	$ 0.2
Accumulated Amortization	(0.1)	(0.1)
Net	$ 0.1	$ 0.1
Weighted Average Useful Life (years)	20 years	20 years
Technology-based assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 163.7	$ 126.9
Accumulated Amortization	(112.0)	(96.3)
Net	$ 51.7	$ 30.6
Weighted Average Useful Life (years)	7 years	7 years
Non-competition agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2.4	$ 2.4
Accumulated Amortization	(2.2)	(2.1)
Net	$ 0.2	$ 0.3
Weighted Average Useful Life (years)	5 years	5 years