Summary of Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Weighted Average Diluted Shares Outstanding

The effects of potential common stock were determined using the treasury stock method:

	Years ended December 31,
	2020	2019	2018
Basic weighted-average shares outstanding	104.6	103.9	103.2
Effect of potential common stock:
Common stock awards	1.1	1.2	1.2
Diluted weighted-average shares outstanding	105.7	105.1	104.4

Schedule of Property, Plant and Equipment

Depreciation and amortization are provided for using principally the straight-line method over the estimated useful lives of the assets as follows:

Buildings	20-30 years
Machinery	8-12 years
Other equipment	3-5 years

The components of property, plant and equipment at December 31 were as follows:

	2020		2019
Land	$	2.3	$	2.2
Buildings	87.1		84.7
Machinery and other equipment	223.3		218.1
Computer equipment	117.8		96.4
Software	80.9		73.3
	511.4		474.7
Accumulated depreciation	(370.8)		(334.8)
	$	140.6	$	139.9

Schedule of Disaggregated Revenue

	Year ended December 31,
	2020		2019		2018
Software and related services	$	2,871.1	$	2,477.7	$	2,165.9
Engineered products and related services	2,656.0		2,889.1		3,025.3
Net revenues	$	5,527.1	$	5,366.8	$	5,191.2