Acquisitions - Net Assets Acquired (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 14, 2021	Jun. 03, 2021	Dec. 31, 2020
Business Combination Segment Allocation [Line Items]
Goodwill	$ 287.1	$ 315.0			$ 108.6
CompuGain
Business Combination Segment Allocation [Line Items]
Receivables			$ 7.8
Prepaid expenses and other current assets			0.7
Properties and other long-term assets			0.2
Operating lease right-of-use assets			0.2
Accounts payable and accruals			(7.4)
Long-term operating lease liabilities			(0.1)
Intangible assets			45.9
Goodwill			38.0
Total			$ 85.3
Unify Square, Inc.
Business Combination Segment Allocation [Line Items]
Receivables				$ 3.4
Prepaid expenses and other current assets				0.6
Properties and other long-term assets				0.4
Operating lease right-of-use assets				1.7
Accounts payable and accruals				(3.8)
Deferred revenue				(2.7)
Long-term operating lease liabilities				(1.7)
Intangible assets				19.6
Goodwill				132.9
Total				$ 150.4