Stockholders' Equity - Additional Information (Details) shares in Millions, $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2020 USD ($) Plan shares	Dec. 31, 2019 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of share-based employee compensation plans \| Plan	3
Pre-2017 Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 6.6
Weighted average recognition period	4 months 24 days
Post-2017 Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 1,700.0
Weighted average recognition period	2 years 10 months 24 days
Service condition satisfied, years	4 years
Post-2017 Awards \| First Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	10.00%
Post-2017 Awards \| Second Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	20.00%
Post-2017 Awards \| Third Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	30.00%
Post-2017 Awards \| Fourth Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	40.00%
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs vested but not yet settled \| shares	4.0	9.4
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average recognition period	1 year 9 months 18 days
Unrecognized compensation cost	$ 11.1

Share-based compensation arrangement by share-based payment award, number of share-based employee compensation plans.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
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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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Percentage of vesting of award under share-based payment arrangement.

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