Revenues from Contracts - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total Revenue	$ 1,563.4	$ 1,350.3	$ 4,564.3	$ 3,940.9
Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	803.4	644.0	2,335.1	1,899.7
Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	364.1	346.6	1,076.7	1,028.0
Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	395.9	359.7	1,152.5	1,013.2
Total Software Revenue
Disaggregation of Revenue [Line Items]
Total Revenue	1,172.1	994.1	3,425.2	2,937.2
Total Software Revenue | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	803.4	644.0	2,335.1	1,899.7
Total Software Revenue | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	364.1	346.6	1,076.7	1,028.0
Total Software Revenue | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	4.6	3.5	13.4	9.5
Recurring
Disaggregation of Revenue [Line Items]
Total Revenue	898.0	721.8	2,588.0	2,128.3
Recurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	630.9	471.1	1,798.7	1,390.5
Recurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	262.8	247.5	777.0	729.2
Recurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	4.3	3.2	12.3	8.6
Reoccurring
Disaggregation of Revenue [Line Items]
Total Revenue	99.4	92.0	299.0	274.8
Reoccurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	33.4	30.0	103.1	90.3
Reoccurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	66.0	62.0	195.9	184.5
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	174.7	180.3	538.2	534.1
Non-recurring | Application Software
Disaggregation of Revenue [Line Items]
Total Revenue	139.1	142.9	433.3	418.9
Non-recurring | Network Software
Disaggregation of Revenue [Line Items]
Total Revenue	35.3	37.1	103.8	114.3
Non-recurring | Technology Enabled Products
Disaggregation of Revenue [Line Items]
Total Revenue	0.3	0.3	1.1	0.9
Product Revenue
Disaggregation of Revenue [Line Items]
Total Revenue	391.3	356.2	1,139.1	1,003.7
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	$ 391.3	$ 356.2	$ 1,139.1	$ 1,003.7