Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 942
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-Name Accounting Standards Codification
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Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 03, 2021	Jan. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 226.2	$ 226.2			$ 108.6	$ 108.6
Amortization expense of intangible assets	0.5	0.5	$ 0.0
Unify Square, Inc.
Goodwill [Line Items]
Goodwill				$ 117.6
ClearPath Forward
Goodwill [Line Items]
Goodwill	98.3	98.3			98.3	98.3
Other
Goodwill [Line Items]
Goodwill	$ 10.3	$ 10.3			$ 10.3	$ 10.3