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Fair Value Measurement - Summary of Additional Information Regarding Contingent Liabilities that are Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total contingent liabilities	$ 0.6	$ 32.3
Significant Observable Inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total contingent liabilities	0.6	32.3
Earnout Payments
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total contingent liabilities	0.6	1.9
Earnout Payments | Significant Observable Inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total contingent liabilities	$ 0.6	1.9
Change of Control
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total contingent liabilities		30.4
Change of Control | Significant Observable Inputs (Level 3)
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total contingent liabilities		$ 30.4

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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