Business Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net revenues:	$ 1,469.7	$ 1,279.8
Percent change in net revenues	14.80%
Gross profit:	$ 1,018.6	897.2
Percent change in gross profit	13.50%
Operating profit	$ 456.2	408.8
Percent change in operating profit	11.60%
Long-lived assets:	$ 213.2	189.0
Percent change in long-lived assets	12.80%
Corporate
Segment Reporting Information [Line Items]
Unallocated corporate general and administrative expenses	$ 55.2	52.9
Application Software
Segment Reporting Information [Line Items]
Net revenues:	$ 761.4	628.2
Percent change in net revenues	21.20%
Gross profit:	$ 520.5	435.4
Percent change in gross profit	19.50%
Operating profit	$ 193.2	172.3
Percent change in operating profit	12.10%
Long-lived assets:	$ 153.3	135.8
Percent change in long-lived assets	12.90%
Network Software
Segment Reporting Information [Line Items]
Net revenues:	$ 354.5	338.5
Percent change in net revenues	4.70%
Gross profit:	$ 299.4	284.9
Percent change in gross profit	5.10%
Operating profit	$ 147.5	136.8
Percent change in operating profit	7.80%
Long-lived assets:	$ 30.7	26.2
Percent change in long-lived assets	17.20%
Technology Enabled Products
Segment Reporting Information [Line Items]
Net revenues:	$ 353.8	313.1
Percent change in net revenues	13.00%
Gross profit:	$ 198.7	176.9
Percent change in gross profit	12.30%
Operating profit	$ 115.5	99.7
Percent change in operating profit	15.80%
Long-lived assets:	$ 29.2	$ 27.0
Percent change in long-lived assets	8.10%