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Fair Value Measurements (Details)	Sep. 30, 2019 USD ($)
Marketable securities held in Trust Account	$ 451,483,512
Fair Value, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Marketable securities held in Trust Account	451,483,512
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Marketable securities held in Trust Account
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs (Level 3) [Member]
Marketable securities held in Trust Account

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- Definition

The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(b))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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