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Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 672.1	$ 617.4	$ 1,980.1	$ 1,804.4
Revenue, Remaining Performance Obligation, Amount	1,700.0		1,700.0
Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized			537.0	494.3
Deferred revenue, current and non-current	$ 622.1		$ 622.1		$ 607.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Percentage	25.00%		25.00%
Revenue, Remaining Performance Obligation, Percentage	25.00%		25.00%
Revenue performance period	6 months		6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Percentage	49.00%		49.00%
Revenue, Remaining Performance Obligation, Percentage	49.00%		49.00%
Revenue performance period	1 year		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Percentage	17.00%		17.00%
Revenue, Remaining Performance Obligation, Percentage	17.00%		17.00%
Revenue performance period	2 years		2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Disaggregation of Revenue [Line Items]
Revenue performance period	3 years		3 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01
Disaggregation of Revenue [Line Items]
Revenue performance period	4 years		4 years
License-based
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 459.0	435.0	$ 1,359.0	1,281.4
Asset-based
Disaggregation of Revenue [Line Items]
Consolidated revenue	103.0	84.7	294.9	252.8
Transaction-based
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 110.1	$ 97.7	$ 326.2	$ 270.2