Summary of Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Weighted Average Diluted Shares Outstanding

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

	Year ended December 31,
	2021	2020	2019
Basic weighted-average shares outstanding	105.3	104.6	103.9
Effect of potential common stock:
Common stock awards	1.2	1.1	1.2
Diluted weighted-average shares outstanding	106.5	105.7	105.1

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 and software	3-5 years

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

	2021		2020
Land	$	2.2	$	2.2
Buildings	77.5		80.2
Machinery and other equipment	164.4		176.1
Computer equipment	117.5		110.9
Software	77.4		75.7
	439.0		445.1
Accumulated depreciation	(336.2)		(317.8)
	$	102.8	$	127.3

Schedule of Disaggregated Revenue

We disaggregate our revenues into two categories: (i) software and related services; and (ii) engineered products and related services. Software and related services revenues are primarily derived from our Application Software and Network Software & Systems reportable segments. Engineered products and related services revenues are derived from all of our reportable segments except Application Software and comprise substantially all of the revenues generated in our Measurement & Analytical Solutions and Process Technologies reportable segments. See details in the table below.

	Year ended December 31,
	2021		2020		2019
Software and related services	$	3,604.3	$	2,871.1	$	2,477.7
Engineered products and related services	2,173.5		1,983.1		2,250.0
Net revenues	$	5,777.8	$	4,854.2	$	4,727.7