Stockholders' Equity - At-the-Market Offerings - Additional Information (Details) - At-the-Market Offerings - Class A Common Stock - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
Jun. 30, 2020	May 13, 2020
Class Of Stock [Line Items]
Maximum aggregate offering shares of common stock		4.0
Gross proceeds from issuance of common stock	$ 354.4
Number of shares Issued	3.0
Average selling price per share	$ 117.98
Stock Issuance Costs	$ 4.8

Gross proceeds from sale of Common stock

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- Definition

Maximum aggregate offering shares of common stock.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

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