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Public Offering, Underwriters Discount

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Public Stock Offering, Direct Costs

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[Line Items] for Schedule of Depreciation and Amortization Expense [Table]

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Amount of allowance for credit loss on accounts receivable, classified as current.

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The amount of amortization of deferred charges applied against earnings during the period.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of lessee's right to use underlying asset under operating lease.

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The cash inflow from the additional capital contribution to the entity.

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Number of new stock issued during the period.

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Basis of Presentation - Narrative (Details) $ in Millions		3 Months Ended			6 Months Ended
Basis of Presentation - Narrative (Details) $ in Millions	Jun. 19, 2020 USD ($) shares	Jun. 30, 2020 USD ($)	Mar. 31, 2020 shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment shares	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Right-of-use assets(1)		$ 24.8			$ 24.8		$ 26.4
Lease liabilities								$ 28.9
Schedule of Depreciation and Amortization Expense [Line Items]
Revenue recognized		12.7		$ 13.3	$ 28.3	$ 32.6
Cumulative effect of new accounting principle							(1.1)
Number of reporting segments \| segment					2
Cash		102.8			$ 102.8		8.2
Cash equivalents		125.4			125.4		7.2
Cash and cash equivalents		228.2		9.3	228.2	9.3	15.4		$ 20.3
Allowance for Doubtful Accounts
Allowance for doubtful accounts		2.0			2.0		1.3
Depreciation and Amortization
Deferred contract costs		8.7		10.5	17.6	20.7
Total		58.6		57.5	116.3	114.4
Accelerated amortization of deferred contract costs				1.9		3.6
Proceeds from Issuance of Common Stock					484.6	0.0
Public stock offering, underwriters discount	$ 16.3
Public stock offering, direct costs	$ 0.4
Property and equipment
Depreciation and Amortization
Total		10.1		9.0	20.1	17.5
Computer software
Depreciation and Amortization
Total		26.4		23.4	52.2	47.1
Other
Depreciation and Amortization
Total		$ 13.4		$ 14.6	$ 26.4	$ 29.1
Common Stock [Member]
Depreciation and Amortization
Issuance of common stock, net of underwriters' discount and issuance costs (shares) \| shares	7,130,000		7,100,000		7,100,000
Accumulated Deficit/Retained Earnings [Member] \| Accounting Standards Update 2016-13 [Member]
Schedule of Depreciation and Amortization Expense [Line Items]
Cumulative effect of new accounting principle							$ (1.1)
Accumulated Deficit/Retained Earnings [Member] \| Accounting Standards Update 2018-02 [Member]
Schedule of Depreciation and Amortization Expense [Line Items]
Cumulative effect of new accounting principle									(1.0)
AOCI Attributable to Parent [Member] \| Accounting Standards Update 2018-02 [Member]
Schedule of Depreciation and Amortization Expense [Line Items]
Cumulative effect of new accounting principle									$ 1.0