Revenues from Contracts - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total Revenue	$ 1,531.2	$ 1,310.8	$ 3,000.9	$ 2,590.6
Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	770.3	627.5	1,531.7	1,255.7
Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	358.1	342.9	712.6	681.4
Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	402.8	340.4	756.6	653.5
Total Software Revenues
Disaggregation of Revenue [Line Items]
Total Revenue	1,133.0	973.5	2,253.1	1,943.1
Total Software Revenues | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	770.3	627.5	1,531.7	1,255.7
Total Software Revenues | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	358.1	342.9	712.6	681.4
Total Software Revenues | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	4.6	3.1	8.8	6.0
Recurring
Disaggregation of Revenue [Line Items]
Total Revenue	849.7	705.2	1,690.0	1,406.5
Recurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	587.2	457.9	1,167.8	919.4
Recurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	258.3	244.5	514.2	481.7
Recurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	4.2	2.8	8.0	5.4
Reoccurring
Disaggregation of Revenue [Line Items]
Total Revenue	100.0	90.6	199.6	182.8
Reoccurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	34.3	28.6	69.7	60.3
Reoccurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	65.7	62.0	129.9	122.5
Reoccurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	0.0	0.0	0.0	0.0
Non-recurring
Disaggregation of Revenue [Line Items]
Total Revenue	183.3	177.7	363.5	353.8
Non-recurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	148.8	141.0	294.2	276.0
Non-recurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	34.1	36.4	68.5	77.2
Non-recurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	0.4	0.3	0.8	0.6
Product Revenue
Disaggregation of Revenue [Line Items]
Total Revenue	398.2	337.3	747.8	647.5
Product Revenue | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	0.0	0.0	0.0	0.0
Product Revenue | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	0.0	0.0	0.0	0.0
Product Revenue | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	$ 398.2	$ 337.3	$ 747.8	$ 647.5