Revenues from Contracts - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Total Revenue	$ 1,469.7	$ 1,279.8
Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	761.4	628.2
Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	354.5	338.5
Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	353.8	313.1
Total Software Revenues
Disaggregation of Revenue [Line Items]
Total Revenue	1,120.1	969.6
Total Software Revenues | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	761.4	628.2
Total Software Revenues | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	354.5	338.5
Total Software Revenues | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	4.2	2.9
Recurring
Disaggregation of Revenue [Line Items]
Total Revenue	840.3	701.3
Recurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	580.6	461.5
Recurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	255.9	237.2
Recurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	3.8	2.6
Reoccurring
Disaggregation of Revenue [Line Items]
Total Revenue	99.6	92.2
Reoccurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	35.4	31.7
Reoccurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	64.2	60.5
Reoccurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	0.0	0.0
Non-recurring
Disaggregation of Revenue [Line Items]
Total Revenue	180.2	176.1
Non-recurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	145.4	135.0
Non-recurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	34.4	40.8
Non-recurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	0.4	0.3
Product Revenue
Disaggregation of Revenue [Line Items]
Total Revenue	349.6	310.2
Product Revenue | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	0.0	0.0
Product Revenue | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	0.0	0.0
Product Revenue | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	$ 349.6	$ 310.2