Stockholders' Equity - Assumed Stock Options (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		6 Months Ended
Feb. 08, 2019	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield		0.00%
Weighted average grant date fair value of stock options assumed (in dollars per share)		$ 21.60
Fair value of options assumed in business combination		$ 19.4
Post combination, stock-based compensation expense		$ 18.6
HelloSign Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options assumed (in shares)	0.9

Allocated Share-based Compensation Expense, Post Combination

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed Through Business Acquisition

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed Through Business Acquisition, Fair Value

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed in Period, Weighted Average Grant Date Fair Value

+ References

No definition available.

+ Details

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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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