Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2017	Mar. 14, 2018	Jun. 30, 2017
Entity Registrant Name	Gores Holdings II, Inc.
Entity Central Index Key	0001682745
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Filer Category	Non-accelerated Filer
Entity Public Float			$ 417.6
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Class A
Entity Common Stock, Shares Outstanding		40,000,000
Class F
Entity Common Stock, Shares Outstanding		10,000,000

BALANCE SHEET - USD ($)	Dec. 31, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 826,201	$ 3,185
Deferred offering costs		414,606
Receivable - related party		436
Prepaid assets	135,581
Total current assets	961,782	418,227
Investments and cash held in Trust Account	402,735,815
Total assets	403,697,597	418,227
Current liabilities:
Accrued expenses, formation and offering costs	66,191	282,436
State franchise tax accrual	131,928	1,750
Notes and advances payable – related party		150,000
Total current liabilities	198,119	434,186
Deferred underwriting compensation	14,000,000
Income tax payable	806,445
Net deferred income tax	4,481
Total liabilities	15,009,045	434,186
Commitments and Contingencies
Temporary Equity [Abstract]
Class A subject to possible redemption 38,368,855 and -0- shares at December 31, 2017 and December 31, 2016, respectively (at redemption value of $10.00 per share)	383,688,550
Stockholders’ equity:
Additional paid-in-capital	3,615,292	23,922
Retained earnings	1,383,547	(40,959)
Total stockholders’ equity	5,000,002	(15,959)
Total liabilities and stockholders’ equity	403,697,597	418,227
Class A
Stockholders’ equity:
Common stock	163
Class F
Stockholders’ equity:
Common stock	$ 1,000	$ 1,078

BALANCE SHEET (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Shares subject to possible redemption, issued	38,368,855	0
Redemption value per share	$ 10	$ 10
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	220,000,000	220,000,000
Class A
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	1,631,145	0
Common stock, shares outstanding	1,631,145	0
Class F
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	10,000,000	10,000,000
Common stock, shares outstanding	10,000,000	10,000,000

STATEMENT OF OPERATIONS - USD ($)	5 Months Ended	12 Months Ended
STATEMENT OF OPERATIONS - USD ($)	Dec. 31, 2016	Dec. 31, 2017
Professional fees and other expenses	$ (39,316)	$ (580,589)
State franchise taxes, other than income tax	(1,750)	(199,691)
Net loss from operations	(41,066)	(780,280)
Other income - interest income	107	3,015,712
Net income before income taxes	(40,959)	2,235,432
Provision for income tax		(810,926)
Net income attributable to common shares	(40,959)	1,424,506
Class A
Net income attributable to common shares		$ 1,757,444
Net Income (Loss) per ordinary share:
Basic and diluted		$ 0.05
Class F
Net income attributable to common shares	$ (40,959)	$ (332,937)
Net Income (Loss) per ordinary share:
Basic and diluted	$ 0.00	$ (0.03)

STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - 12 months ended Dec. 31, 2017 - USD ($)	Class A Ordinary Shares	Class F Ordinary Shares	Additional Paid-in Capital	Accumulated Deficit/Retained Earnings	Total
Beginning Balance (in shares) at Dec. 31, 2016		10,781,250
Beginning Balance at Dec. 31, 2016		$ 1,078	$ 23,922	$ (40,959)	$ (15,959)
Common stock forfeited (in shares)		(781,250)
Common stock forfeited, value		$ (78)	78
Sale of common stock (in shares)	40,000,000				40,000,000
Sale of common stock, value	$ 4,000		399,996,000		$ 400,000,000
Sale of Private Placement Warrants to Sponsor			10,000,000		10,000,000
Underwriters discounts			(8,000,000)		(8,000,000)
Offering costs charged to additional paid-in capital			(719,995)		(719,995)
Deferred underwriting compensation			(14,000,000)		(14,000,000)
Common stock subject to possible redemption (in shares)	(38,368,855)
Common stock subject to possible redemption	$ (3,837)		(383,684,713)		(383,688,550)
Net income				1,424,506	1,424,506
Ending Balance (in shares) at Dec. 31, 2017	1,631,145	10,000,000
Ending Balance at Dec. 31, 2017	$ 163	$ 1,000	$ 3,615,292	$ 1,383,547	$ 5,000,002

STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares		12 Months Ended
	Jan. 19, 2017	Dec. 31, 2017	Dec. 31, 2016	Aug. 19, 2016
Number of warrants sold	6,666,666	6,666,666
Warrants sold, price per warrant	$ 1.50	$ 1.50
Number of shares subject to possible redemption		38,368,855	0
Redemption value per share		$ 10	$ 10
Class A
Share price (in dollars per share)	$ 10.00	$ 10.00
Class F
Share price (in dollars per share)				$ 0.002

STATEMENT OF CASH FLOWS - USD ($)	5 Months Ended	12 Months Ended
STATEMENT OF CASH FLOWS - USD ($)	Dec. 31, 2016	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ (40,959)	$ 1,424,506
Changes in deferred income tax provision		4,481
Changes in receivable - related party	(436)	436
Changes in state franchise tax accrual	1,750	130,178
Changes in prepaid assets		(135,581)
Changes in deferred offering costs		414,606
Changes in income taxes payable		806,445
Changes in accrued expenses, formation and offering costs	(132,170)	(216,245)
Net cash provided by operating activities	(171,815)	2,428,826
Cash flows from investing activities
Cash deposited in Trust Account		(400,000,000)
Interest reinvested in Trust Account		(2,735,815)
Net cash used in investing activities		(402,735,815)
Cash flows from financing activities:
Proceeds from sale of Units in initial public offering		400,000,000
Proceeds from sale of Private Placement Warrants to Sponsor		10,000,000
Proceeds from note payable - related party	150,000
Proceeds from sale of Class F common stock to Sponsor	25,000
Repayment of notes and advances payable - related party		(150,000)
Payment of underwriters' discounts and commissions		(8,000,000)
Payment of accrued offering costs		(719,995)
Net cash provided by financing activities	175,000	401,130,005
Increase in cash	3,185	823,016
Cash at beginning of period		3,185
Cash at end of period	3,185	826,201
Supplemental disclosure of non-cash financing activities:
Deferred underwriting compensation.		14,000,000
Offering costs included in accrued expenses	$ 274,436
Cash paid for income and state franchise taxes		$ 69,513

Organization and Business Operations

12 Months Ended

Dec. 31, 2017

Organization and Business Operations

Organization and Business Operations

1. Organization and Business Operations

Organization and General

Gores Holdings II, Inc. (the “Company”) was incorporated in Delaware on August 15, 2016. The Company was formed for the purpose of effecting a merger, Capital Stock exchange, asset acquisition, stock purchase, reorganization or similar Business Combination with one or more businesses (the “Business Combination”). The Company has neither engaged in any operations nor generated any revenue to date. The Company’s management has broad discretion with respect to the Business Combination. The Company’s Sponsor is Gores Sponsor II, LLC, a Delaware limited liability company (the “Sponsor”). The Company has selected December 31 as its fiscal year-end.

As of December 31, 2017, the Company had not commenced any operations. All activity for the year ended December 31, 2017 relates to the Company’s formation and initial public offering (“Public Offering”) described below and efforts directed toward locating a suitable Business Combination. The Company completed the Public Offering on January 19, 2017 (the “IPO Closing Date”). The Company will not generate any operating revenues until after the completion of its Business Combination, at the earliest. Subsequent to the Public Offering, the Company will generate non-operating income in the form of interest income on cash and cash equivalents from the proceeds derived from the Public Offering and the sale of the Private Placement Warrants (as defined below) held in the Trust Account (as defined below).

Financing

Upon the IPO Closing Date closing of the Public Offering and the sale of the Private Placement Warrants, an aggregate of $400,000,000 was placed in a Trust Account with Continental Stock Transfer & Trust Company (the “Trust Account”) acting as trustee.

Trust Account

Funds held in the Trust Account can be invested only in U.S. government treasury bills with a maturity of one hundred and eighty (180) days or less or in money market funds meeting certain conditions under Rule 2a 7 under the Investment Company Act of 1940, as amended, that invest only in direct U.S. government obligations. As of December 31, 2017, the Trust Account consisted of cash and treasury bills compliant with Rule 2a 7.

The Company’s amended and restated certificate of incorporation provides that, other than the withdrawal of interest to pay income taxes, if any, none of the funds held in trust will be released until the earliest of: (i) the completion of the Business Combination; or (ii) the redemption of any public shares of common stock properly tendered in connection with a stockholder vote to amend the Company’s amended and restated certificate of incorporation to modify the substance or timing of the Company’s obligation to redeem 100% of such public shares of common stock if the Company does not complete the Business Combination within 24 months from the IPO Closing Date; or (iii) the redemption of 100% of the public shares of common stock if the Company is unable to complete a Business Combination within 24 months from the IPO Closing Date, subject to the requirements of law and stock exchange rules.

Business Combination

The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Public Offering, although substantially all of the net proceeds of the Public Offering are intended to be generally applied toward consummating a Business Combination. The Business Combination must be with one or more target businesses that together have an aggregate fair market value of at least 80% of the assets held in the Trust Account (less any deferred underwriting commissions (the “Deferred Discount”) and taxes payable on interest income earned) at the time of the Company signing a definitive agreement in connection with the Business Combination. Furthermore, there is no assurance that the Company will be able to successfully effect a Business Combination.

The Company, after signing a definitive agreement for a Business Combination, will either (i) seek stockholder approval of the Business Combination at a meeting called for such purpose in connection with which stockholders may seek to redeem their shares, regardless of whether they vote for or against the Business Combination, for cash equal to their pro rata share of the aggregate amount then on deposit in the Trust Account as of two business days prior to the consummation of the Business Combination, including interest income but less taxes payable, or (ii) provide stockholders with the opportunity to sell their shares to the Company by means of a tender offer (and thereby avoid the need for a stockholder vote) for an amount in cash equal to their pro rata share of the aggregate amount then on deposit in the Trust Account as of two business days prior to the consummation of the Business Combination, including interest income but less taxes payable. The decision as to whether the Company will seek stockholder approval of the Business Combination or will allow stockholders to sell their shares in a tender offer will be made by the Company, solely in its discretion, and will be based on a variety of factors such as the timing of the transaction and whether the terms of the transaction would otherwise require the Company to seek stockholder approval, unless a vote is required by law or under NASDAQ rules. If the Company seeks stockholder approval, it will complete its Business Combination only if a majority of the outstanding shares of common stock voted are voted in favor of the Business Combination. Currently, the Company will not redeem its public shares of common stock in an amount that would cause its net tangible assets to be less than $5,000,001. In such case, the Company would not proceed with the redemption of its public shares of common stock and the related Business Combination, and instead may search for an alternate Business Combination.

As a result of the foregoing redemption provisions, the public shares of common stock will be recorded at redemption amount and classified as temporary equity, in accordance with ASC 480, “Distinguishing Liabilities from Equity” (“ASC 480”) in subsequent periods.

The Company will have 24 months from the IPO Closing Date to complete its Business Combination. If the Company does not complete a Business Combination within this period of time, it shall (i) cease all operations except for the purposes of winding up; (ii) as promptly as reasonably possible, but not more than ten business days thereafter, redeem the public shares of common stock for a per share pro rata portion of the Trust Account, including interest income, but less taxes payable (less up to $100,000 of such net interest income to pay dissolution expenses) and (iii) as promptly as possible following such redemption, dissolve and liquidate the balance of the Company’s net assets to its remaining stockholders, as part of its plan of dissolution and liquidation. The Sponsor and the Company’s officers and directors have entered into a letter agreement with the Company, pursuant to which they waived their rights to participate in any redemption with respect to their Founder Shares (as defined below); however, if the Sponsor or any of the Company’s officers, directors or affiliates acquire public shares of common stock, they will be entitled to a pro rata share of the Trust Account in the event the Company does not complete a Business Combination within the required time period.

Emerging Growth Company

Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard.

Significant Accounting Policies

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies

Significant Accounting Policies

Basis of Presentation

The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and pursuant to the accounting and disclosure rules and regulations of the Securities and Exchange Commission (“SEC”), and reflect all adjustments, which are, in the opinion of management, necessary for a fair presentation of the financial position as of December 31, 2017 and 2016 and the results of operations and cash flows for the periods presented.

Net Income/(Loss) Per Common Share

The Company has two classes of shares, which are referred to as Class A common stock (the “Common Stock”) and Class F common stock (the “Founder Shares”). Net income/(loss) per common share is computed utilizing the two-class method. The two-class method is an earnings allocation formula that determines earnings per share separately for each class of common stock based on an allocation of undistributed earnings per the rights of each class. As of December 31, 2017, the Company did not have any dilutive securities or other contracts that could, potentially, be exercised or converted into common stock and then share in the earnings of the Company under the treasury stock method. As a result, diluted net income/(loss) per common share is the same as basic net income/(loss) per common share for the period. The table below presents a reconciliation of the numerator and denominator used to compute basic and diluted net income/(loss) per share for each class of common stock:


	Year Ended December 31, 2017				For the period from August 15, 2016 (inception) to December 31, 2016
	Class A		Class F		Class A		Class F
Basic and diluted net income/(loss) per share:
Numerator:
Allocation of net income/(loss)	$	1,757,444	$	(332,937)	$	-	$	(40,959)

Denominator:
Weighted-average shares outstanding		38,028,000		10,122,031		-		10,781,250
Basic and diluted net income/(loss) per share	$	0.05	$	(0.03)	$	-	$	(0.00)

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution as well as the Trust Account, which at times, may exceed the Federal depository insurance coverage of $250,000. The Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts.

Financial Instruments

The fair value of the Company’s assets and liabilities, which qualify as financial instruments under FASB ASC 820, “Fair Value Measurements and Disclosures,” approximates the carrying amounts represented in the balance sheet.

Offering Costs

The Company complies with the requirements of the ASC 340-10-S99-1 and SEC Staff Accounting Bulletin (SAB) Topic 5A — “Expenses of Offering”. Offering costs consist principally of professional and registration fees incurred through the balance sheet date that are related to the Public Offering and were charged to stockholders’ equity upon the completion of the Public Offering. Accordingly, as of December 31, 2017 and December 31, 2016, offering costs totaling approximately $22,719,995 and $414,606 respectively, (including $22,000,000 in underwriter’s fees), have been charged to stockholders’ equity.

Redeemable Common Stock

As discussed in Note 3, all of the 40,000,000 shares of Common Stock sold as part of the Units in the Public Offering contain a redemption feature which allows for the redemption of such public shares in connection with the Company’s liquidation, if there is a stockholder vote or tender offer in connection with the Business Combination and in connection with certain amendments to the Company’s amended and restated certificate of incorporation. In accordance with ASC 480, redemption provisions not solely within the control of the Company require common stock subject to redemption to be classified outside of permanent equity. Ordinary liquidation events, which involve the redemption and liquidation of all of the entity’s equity instruments, are excluded from the provisions of ASC 480. Although the Company did not specify a maximum redemption threshold, its amended and restated certificate of incorporation provides that currently, the Company will not redeem its public shares in an amount that would cause its net tangible assets (stockholders’ equity) to be less than $5,000,001.

The Company recognizes changes in redemption value immediately as they occur and adjusts the carrying value of redeemable common stock to equal the redemption value at the end of each reporting period. Increases or decreases in the carrying amount of redeemable common stock are affected by charges against additional paid in capital.

Accordingly, as of December 31, 2017, 38,368,855 of the 40,000,000 public shares are classified outside of permanent equity at their redemption value.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Income Taxes

The Company follows the asset and liability method of accounting for income taxes under ASC 740, “Income Taxes.” Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statements carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized.

The Company accounts for uncertainty in income taxes by recognizing the tax benefit from an uncertain tax position only if it is more than likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The Company measures the tax benefits recognized in the financial statements from such a position based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate resolution. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. As such, the Company is required to make many subjective assumptions and judgments regarding income tax exposures. Interpretations of and guidance surrounding income tax law and regulations change over time and may result in changes to the Company's subjective assumptions and judgments, which can materially affect amounts recognized in the balance sheets and statements of income and comprehensive income. The Company recognizes interest and penalties related to uncertain tax positions in other income (expense). No penalties or interest were recorded during the years ended December 31, 2017 and December 31, 2016.

The Company may be subject to potential examination by U.S. federal, states or foreign jurisdiction authorities in the areas of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income amounts in various tax jurisdictions and compliance with U.S. federal, states or foreign tax laws.

The Company is incorporated in the State of Delaware and is required to pay franchise taxes to the State of Delaware on an annual basis.

Cash and Cash Equivalents

The Company considers all highly liquid instruments purchased with an original maturity of three months or less to be cash equivalents. The Company continually monitors its positions with and the credit quality of the financial institutions with which it invests. As of the balance sheet date, and periodically throughout the year, the Company has maintained balances in various operating accounts in excess of federally insured limits.

Investments and Cash Held in Trust Account

As of December 31, 2017, the Company had $402,735,815 in the Trust Account which may be utilized for Business Combinations. As of December 31, 2017, the Trust Account consisted of both cash and treasury bills.

The Company’s amended and restated certificate of incorporation provides that, other than the withdrawal of interest to pay taxes, if any, none of the funds held in trust will be released until the earlier of: (i) the completion of the Business Combination; (ii) the redemption of any public shares of common stock properly tendered in connection with a stockholder vote to amend the Company’s amended and restated certificate of incorporation to modify the substance or timing of the Company’s obligation to redeem 100% of such public shares of common stock if the Company does not complete the Business Combination within 24 months from the IPO Closing Date; or (iii) the redemption of 100% of the public shares of common stock if the Company is unable to complete a Business Combination within 24 months from the IPO Closing Date, subject to the requirements of law and stock exchange rules.

Recently Adopted Accounting Pronouncements

In November 2016, the FASB issued ASU No. 2016-17, Income Taxes - Balance Sheet Classification of Deferred Taxes (Topic 740). The amendments under the new guidance require that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. The guidance is effective for consolidated financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted for all entities as of the beginning of an interim or annual reporting period. The amendments in this ASU may be applied either prospectively to all deferred tax liabilities and assets or retrospectively to all periods presented. The Company has adopted this guidance effective on a retrospective basis, the impact of which was not significant to the financial statements.

Going Concern Consideration

If the Company does not complete its Business Combination by January 19, 2019, the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten business days thereafter, redeem 100% of the common stock sold as part of the units in the Public Offering, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest (which interest shall be net of franchise and income taxes payable and less up to $100,000 of such net interest which may be distributed to the Company to pay dissolution expenses), divided by the number of then outstanding public shares, which redemption will completely extinguish public stockholders’ rights as stockholders (including the right to receive further liquidation distributions, if any), subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the Company’s remaining stockholders and the Company’s Board of Directors, dissolve and liquidate, subject in each case to the Company’s obligations under Delaware law to provide for claims of creditors and the requirements of other applicable law.

In the event of such distribution, it is possible that the per share value of the residual assets remaining available for distribution (including Trust Account assets) will be less than the initial public offering price per unit (the “Units”) in the Public Offering. In addition if the Company fails to complete its Business Combination by January 19, 2019, there will be no redemption rights or liquidating distributions with respect to the warrants, which will expire worthless.

In addition, as of December 31, 2017 and December 31, 2016, the Company had current liabilities of $198,119 and $434,186, respectively, and working capital of $763,663 and ($15,959), respectively, largely due to amounts owed to professionals, consultants, advisors and others who are working on seeking a Business Combination as described in Note 1. Such work is continuing after December 31, 2017 and amounts are continuing to accrue.

Reclassifications

Certain reclassifications have been made to the 2016 financial statement information to conform to the 2017 financial statement presentation.

Public Offering	12 Months Ended
Public Offering	Dec. 31, 2017
Public Offering
Public Offering	3. Public Offering Public Units On January 19, 2017, the Company sold 40,000,000 units at a price of $10.00 per Unit, including 2,500,000 Units as a result of the underwriter’s partial exercise of their over-allotment option, generating gross proceeds of $400,000,000. Each Unit consists of one share of the Company’s Common Stock, $0.0001 par value, and one one-third of one redeemable Common Stock purchase warrant (the “Warrants”). Each whole Warrant entitles the holder to purchase one share of Common Stock for $11.50 per share. Each Warrant will become exercisable on the later of 30 days after the completion of the Business Combination or 12 months from IPO Closing Date and will expire five years after the completion of the Business Combination or earlier upon redemption or liquidation. However, if the Company does not complete the Business Combination on or prior to the 24-month period allotted to complete the Business Combination, the Warrants will expire at the end of such period. The Warrants were issued in registered form under a warrant agreement between Continental Stock Transfer & Trust Company, as warrant agent, and the Company. The Company did not register the shares of common stock issuable upon exercise of the Warrants under the Securities Act of 1933, as amended (the “Securities Act”) or any state securities law. Under the terms of the warrant agreement, the Company has agreed to use its best efforts to file a registration statement under the Securities Act following the completion of the Business Combination covering the shares of common stock issuable upon exercise of the Warrants. The Company paid an upfront underwriting discount of 2.00% ($8,000,000) of the per Unit offering price to the underwriters at IPO Closing Date, with an additional fee (the “Deferred Discount”) of 3.50% of the per Unit offering price payable upon the Company’s completion of a Business Combination. The Deferred Discount will become payable to the underwriters from the amounts held in the Trust Account solely in the event the Company completes its Business Combination.

Related Party Transactions

12 Months Ended

Dec. 31, 2017

Related Party Transactions

Related Party Transactions

4. Related Party Transactions

Founder Shares

On August 19, 2016, the Sponsor purchased 10,781,250 Founder Shares for an aggregate purchase price of $25,000, or approximately $0.002 per share. Subsequently, the Sponsor transferred an aggregate of 75,000 Founder Shares to the Company’s independent directors (together with the Sponsor, the “Initial Stockholders”). On February 27, 2017, the Sponsor forfeited 781,250 Founder Shares following the expiration of the unexercised portion of underwriter’s over-allotment option, so that the Founder Shares held by the Initial Stockholders would represent 20.0% of the outstanding shares of common stock following completion of the Public Offering. The Founder Shares are identical to the common stock included in the Units sold in the Public Offering except that the Founder Shares will automatically convert into shares of Common Stock at the time of the Business Combination on a one-for-one basis, subject to adjustment as described in the Company’s amended and restated certificate of incorporation.

Private Placement Warrants

The Sponsor purchased from the Company an aggregate of 6,666,666 warrants at a price of $1.50 per warrant (a purchase price of $10,000,000) in a private placement that occurred simultaneously with the Public Offering (the “Private Placement Warrants”). Each Private Placement Warrant entitles the holder to purchase one share of Common Stock at $11.50 per share. A portion of the purchase price of the Private Placement Warrants was added to the proceeds from the Public Offering to be held in the Trust Account pending completion of the Business Combination.

The Private Placement Warrants have terms and provisions that are identical to those of the Warrants sold as part of the Units in the Public Offering, except that the Private Placement Warrants may be net cash settled and are not redeemable so long as they are held by the Sponsor or its permitted transferees.

If the Company does not complete a Business Combination, then the Private Placement Warrants proceeds will be part of the liquidation distribution to the public stockholders and the Private Placement Warrants will expire worthless.

Registration Rights

The holders of Founder Shares, Private Placement Warrants and Warrants issued upon conversion of working capital loans, if any, have registration rights (in the case of the Founder Shares, only after conversion of such shares to common shares) pursuant to a registration rights agreement entered into by the Company, the Sponsor and the other security holders named therein on January 12, 2017. These holders will also have certain demand and “piggy back” registration rights. The Company will bear the expenses incurred in connection with the filing of any such registration statements.

Sponsor Loan

On August 19, 2016, the Sponsor loaned the Company an aggregate of $150,000 by the issuance of an unsecured promissory note for $150,000 to cover expenses related to the Public Offering, and on January 11, 2017, the Sponsor loaned the Company an additional $150,000 by the issuance of a second unsecured promissory note for $150,000 to cover expenses related to the Public Offering. These Notes were non-interest bearing and payable on the earlier of January 31, 2017 or the completion of the Public Offering. These Notes were repaid in full upon the completion of the Public Offering.

Administrative Services Agreement

The Company entered into an administrative services agreement on January 12, 2017, pursuant to which it agreed to pay to an affiliate of the Sponsor $20,000 a month for office space, utilities, and secretarial support. Services commenced on the date the securities were first listed on the NASDAQ Capital Market and will terminate upon the earlier of the consummation by the Company of a Business Combination or the liquidation of the Company.

Income Taxes

12 Months Ended

Dec. 31, 2017

Income Taxes

Income Taxes

6. Income Taxes

Effective Tax Rate Reconciliation

The effective income tax rate for the year ended December 31, 2017 and December 31, 2016 differs from the expected federal statutory income tax rate of 34% and 35%, respectively. The significant items causing a difference between the statutory federal income tax rate and the Company's effective income tax rate are as follows:


			For the period from
			August 15, 2016
	Year Ended		(inception) to
	December 31,		December 31,
	2017		2016
Federal Statutory Income Tax Rate	$	760,047	$	(14,336)
Permanent Differences		—		—
State Income Taxes, net of Federal Benefit		68,310		(1,229)
Tax Return to Provision True-Up		—		—
Change in Valuation Allowance		(15,564)		15,564
Change in Tax Rate		(2,425)		—
Other		558		—
Net Income Tax Provision (benefit)	$	810,926	$	—

Current/Deferred Taxes

The provision for income taxes consisted of the following for the year ended December 31, 2017 and the year ended December 31, 2016:


			For the period from
			August 15, 2016
	Year Ended		(inception) to
	December 31,		December 31,
	2017		2016
Current Taxes
Federal	$	705,682	$	—
State		100,763		—
Total Current Income Tax Provision	$	806,445	$	—
Deferred Taxes
Federal	$	3,269	$	—
State		1,212		—
Total Deferred Income Tax Provision	$	4,481	$	—
Income Tax Provision (Benefit)	$	810,926	$	—

Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2017, and December 31, 2016 are as follows:


			For the period from
			August 15, 2016
	Year Ended		(inception) to
	December 31,		December 31,
	2017		2016
Deferred Tax Assets (Liabilities):
Accrued professional fees	$	1,973	$	3,040
Unrealized Gain/Loss on Investments		(6,454)		—
Net operating loss carryforwards		—		12,524
Valuation Allowance		—		(15,564)
Net Deferred Tax Asset (Liability)	$	(4,481)	$	—

On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the “Act”) was signed into law making significant changes to the Internal Revenue Code. The Act contains reform to the corporate tax law including reducing the corporate tax rate to 21%, eliminating the 2-year carryback for net operating losses, and creating an indefinite carryforward period for the net operating losses limited to 80% of taxable income. Due to the Act, the deferred tax balances were calculated using a federal effective tax rate of 21%.

Fair Value Measurement

12 Months Ended

Dec. 31, 2017

Fair Value Measurement

Fair Value Measurement

8. Fair Value Measurements

The Company complies with FASB ASC 820, Fair Value Measurements, for its financial assets and liabilities that are re-measured and reported at fair value at each reporting period, and non-financial assets and liabilities that are re-measured and reported at fair value at least annually. ASC 820 determines fair value to be the price that would be received to sell an asset or would be paid to transfer a liability (i.e., the exit price) in an orderly transaction between market participants at the measurement date.

The following table presents information about the Company’s assets that are measured at fair value on a recurring basis as of December 31, 2017, and indicates the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value. In general, fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities. Fair values determined by Level 2 inputs utilize data points that are observable such as quoted prices, interest rates and yield curves. Fair values determined by Level 3 inputs are unobservable data points for the asset or liability, and includes situations where there is little, if any, market activity for the asset or liability:


					Significant		Significant
					Other		Other
			Quoted Prices in		Observable		Unobservable
	December 31,		Active Markets		Inputs		Inputs
Description	2017		(Level 1)		(Level 2)		(Level 3)
Investments and cash held in Trust Account		402,735,815		402,735,815		—		—
Total	$	402,735,815	$	402,735,815	$	—	$	—

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Stockholders’ Equity	12 Months Ended
Stockholders’ Equity	Dec. 31, 2017
Stockholders’ Equity.
Stockholders’ Equity	9. Stockholders’ Equity Common Stock The Company is authorized to issue 220,000,000 shares of common stock, consisting of 200,000,000 shares of Common Stock, par value $0.0001 per share and 20,000,000 Founders Shares, par value $0.0001 per share. Holders of the Company’s common stock are entitled to one vote for each share of common stock and vote together as a single class. At December 31, 2017, there were 40,000,000 shares of Class A common stock (inclusive of the 38,368,855 shares subject to redemption) and 10,000,000 shares of Class F common stock issued and outstanding. Preferred Stock The Company is authorized to issue 1,000,000 shares of preferred stock, par value $0.0001 per share, with such designations, voting and other rights and preferences as may be determined from time to time by the Board of Directors. At December 31, 2017, there were no shares of preferred stock issued and outstanding.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies

Basis of Presentation

Net Loss Per Common Share

Net Income/(Loss) Per Common Share


	Year Ended December 31, 2017				For the period from August 15, 2016 (inception) to December 31, 2016
	Class A		Class F		Class A		Class F
Basic and diluted net income/(loss) per share:
Numerator:
Allocation of net income/(loss)	$	1,757,444	$	(332,937)	$	-	$	(40,959)

Denominator:
Weighted-average shares outstanding		38,028,000		10,122,031		-		10,781,250
Basic and diluted net income/(loss) per share	$	0.05	$	(0.03)	$	-	$	(0.00)

Concentration of Credit Risk

Financial Instruments

Offering Costs

Redeemable Common Stock

Accordingly, as of December 31, 2017, 38,368,855 of the 40,000,000 public shares are classified outside of permanent equity at their redemption value.

Use of Estimates

Income Taxes

The Company is incorporated in the State of Delaware and is required to pay franchise taxes to the State of Delaware on an annual basis.

Cash and Cash Equivalents

Investments and Cash Held in Trust Account

Recently Adopted Accounting Pronouncements

Going Concern Consideration

Reclassifications

Certain reclassifications have been made to the 2016 financial statement information to conform to the 2017 financial statement presentation.

Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]


	Year Ended December 31, 2017				For the period from August 15, 2016 (inception) to December 31, 2016
	Class A		Class F		Class A		Class F
Basic and diluted net income/(loss) per share:
Numerator:
Allocation of net income/(loss)	$	1,757,444	$	(332,937)	$	-	$	(40,959)

Denominator:
Weighted-average shares outstanding		38,028,000		10,122,031		-		10,781,250
Basic and diluted net income/(loss) per share	$	0.05	$	(0.03)	$	-	$	(0.00)

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Taxes

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]


			For the period from
			August 15, 2016
	Year Ended		(inception) to
	December 31,		December 31,
	2017		2016
Federal Statutory Income Tax Rate	$	760,047	$	(14,336)
Permanent Differences		—		—
State Income Taxes, net of Federal Benefit		68,310		(1,229)
Tax Return to Provision True-Up		—		—
Change in Valuation Allowance		(15,564)		15,564
Change in Tax Rate		(2,425)		—
Other		558		—
Net Income Tax Provision (benefit)	$	810,926	$	—

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]


			For the period from
			August 15, 2016
	Year Ended		(inception) to
	December 31,		December 31,
	2017		2016
Current Taxes
Federal	$	705,682	$	—
State		100,763		—
Total Current Income Tax Provision	$	806,445	$	—
Deferred Taxes
Federal	$	3,269	$	—
State		1,212		—
Total Deferred Income Tax Provision	$	4,481	$	—
Income Tax Provision (Benefit)	$	810,926	$	—

Schedule of deferred tax asset


			For the period from
			August 15, 2016
	Year Ended		(inception) to
	December 31,		December 31,
	2017		2016
Deferred Tax Assets (Liabilities):
Accrued professional fees	$	1,973	$	3,040
Unrealized Gain/Loss on Investments		(6,454)		—
Net operating loss carryforwards		—		12,524
Valuation Allowance		—		(15,564)
Net Deferred Tax Asset (Liability)	$	(4,481)	$	—

Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Measurement

Schedule of assets measured at fair value on a recurring basis


					Significant		Significant
					Other		Other
			Quoted Prices in		Observable		Unobservable
	December 31,		Active Markets		Inputs		Inputs
Description	2017		(Level 1)		(Level 2)		(Level 3)
Investments and cash held in Trust Account		402,735,815		402,735,815		—		—
Total	$	402,735,815	$	402,735,815	$	—	$	—

Organization and Business Operations (Details) - USD ($)		12 Months Ended
	Jan. 19, 2017	Dec. 31, 2017
Stockholders' Equity
Amount placed in trust account	$ 400,000,000	$ 400,000,000
Maximum maturity period (in days)		180 days
Redemption percentage for release of Trust Account funds		100.00%
Redemption percentage if business combination is not completed		100.00%
Number of months to complete Business Combination		24 months
Number of days to seek shareholder approval for redemption of shares		2 days
Number of days to provide opportunity to shareholders to sell their shares		2 days
Threshold net tangible assets		$ 5,000,001
Number of days to redeem the shares if Business combination is not completed		10 days
Dissolution expenses, maximum allowed		$ 100,000
Minimum
Stockholders' Equity
Percentage of fair market value		80.00%
Maximum
Stockholders' Equity
Threshold net tangible assets		$ 5,000,001
Number of days to redeem the shares if Business combination is not completed		10 days

Significant Accounting Policies (Details)		5 Months Ended	12 Months Ended
Significant Accounting Policies (Details)	Aug. 19, 2016 shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) item $ / shares shares
Net Loss per Common Share
Number of classes of shares \| item			2
Dilutive securities \| shares			0
Allocation of net income/(loss)		$ (40,959)	$ 1,424,506
Offering costs charged to stockholders' equity to date		$ 414,606	22,719,995
Underwriter's fees			$ 22,000,000
Sale of common stock (in shares) \| shares			40,000,000
Threshold net tangible assets			$ 5,000,001
Shares subject to possible redemption, issued \| shares		0	38,368,855
Common stock, inclusive of shares subject to redemption, number of shares issued and outstanding \| shares			40,000,000
Income taxes
Accrued interest and penalties related to unrecognized tax liabilities		$ 0	$ 0
Assets Held-in-trust [Abstract]
Investments and cash held in Trust Account			$ 402,735,815
Redemption percentage for release of Trust Account funds			100.00%
Number of months to complete Business Combination			24 months
Redemption percentage if business combination is not completed			100.00%
Business Combination, Description [Abstract]
Number of days to redeem the shares if Business combination is not completed			10 days
Dissolution expenses, maximum allowed			$ 100,000
Current liabilities		434,186	198,119
Working capital		$ (15,959)	763,663
Maximum
Net Loss per Common Share
Threshold net tangible assets			$ 5,000,001
Business Combination, Description [Abstract]
Number of days to redeem the shares if Business combination is not completed			10 days
Class A
Net Loss per Common Share
Allocation of net income/(loss)			$ 1,757,444
Weighted average common shares outstanding, Basic & Diluted \| shares			38,028,000
Basic and diluted net income/(loss) per share \| $ / shares			$ 0.05
Common stock, inclusive of shares subject to redemption, number of shares issued and outstanding \| shares			40,000,000
Common stock, shares outstanding \| shares		0	1,631,145
Class F
Net Loss per Common Share
Allocation of net income/(loss)		$ (40,959)	$ (332,937)
Weighted average common shares outstanding, Basic & Diluted \| shares		10,781,250	10,122,031
Basic and diluted net income/(loss) per share \| $ / shares		$ 0.00	$ (0.03)
Sale of common stock (in shares) \| shares	10,781,250
Common stock, shares outstanding \| shares		10,000,000	10,000,000

Public Offering - (Details) - USD ($)		12 Months Ended
Public Offering - (Details) - USD ($)	Jan. 19, 2017	Dec. 31, 2017	Dec. 31, 2016
Stockholders' Equity
Gross proceeds	$ 400,000,000	$ 400,000,000
Sale of common stock (in shares)		40,000,000
Number of shares warrant may be converted		1
Warrants exercise price (in dollars per share)		$ 11.50
Warrant exercisable term if business combination is completed		30 days
Warrant exercisable term from the closing of public offer		12 months
Warrant expiration term		5 years
Number of months to complete Business Combination		24 months
Upfront underwriting discount (as a percent)	2.00%
Upfront underwriting discount	$ 8,000,000	$ 8,000,000
Percentage of deferred underwriting discount	3.50%	3.50%
Class A
Stockholders' Equity
Share Price	$ 10.00	$ 10.00
Common stock, par value (in dollars per share)		$ 0.0001	$ 0.0001
Number of shares that contribute each unit		1
Warrant
Stockholders' Equity
Number of shares that contribute each unit		0.33
IPO
Stockholders' Equity
Units sold	40,000,000
Over-Allotment Option
Stockholders' Equity
Units sold	2,500,000

Related Party Transactions - (Details)					4 Months Ended	5 Months Ended	12 Months Ended
Related Party Transactions - (Details)	Feb. 27, 2017 shares	Jan. 19, 2017 USD ($) $ / shares shares	Jan. 11, 2017 USD ($)	Aug. 19, 2016 USD ($) $ / shares shares	Dec. 31, 2016 shares	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) $ / shares shares
Related Party Transaction [Line Items]
Sale of common stock (in shares)							40,000,000
Sale of common stock, value \| $						$ 25,000	$ 400,000,000
Outstanding shares of common stock held by the initial stockholders (as a percent)	20.00%
Number of warrants sold		6,666,666					6,666,666
Warrants sold, price per warrant \| $ / shares		$ 1.50					$ 1.50
Proceeds from sale of Private Placement Warrants to Sponsor \| $		$ 10,000,000					$ 10,000,000
Number of shares warrant may be converted							1
Warrants exercise price (in dollars per share) \| $ / shares							$ 11.50
Class A
Related Party Transaction [Line Items]
Share price (in dollars per share) \| $ / shares		$ 10.00					$ 10.00
Class F
Related Party Transaction [Line Items]
Sale of common stock (in shares)				10,781,250
Sale of common stock, value \| $				$ 25,000
Share price (in dollars per share) \| $ / shares				$ 0.002
Number of shares transferred					75,000
Number of shares forfeited	781,250
Conversion ratio							1
Sponsor [Member] \| Sponsor Loan
Related Party Transaction [Line Items]
Proceeds from Promissory Note to related party \| $			$ 150,000	$ 150,000
Sponsor [Member] \| Administrative Service Agreement
Related Party Transaction [Line Items]
Monthly charge for administrative services \| $							$ 20,000

Deferred Underwriting Compensation - (Details) - USD ($)		12 Months Ended
	Jan. 19, 2017	Dec. 31, 2017
Deferred Underwriting Compensation.
Deferred underwriting discount payable if business combination is completed		$ 14,000,000
Percentage of deferred underwriting discount	3.50%	3.50%
Deferred underwriting discount if business combination not completed		$ 0

Income Taxes - Rate reconciliation (Details) - USD ($)	5 Months Ended	12 Months Ended
Income Taxes - Rate reconciliation (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Federal income tax rate		34.00%	35.00%
Tax at federal statutory income tax rate	$ (14,336)	$ 760,047
State income taxes, net of federal benefit	(1,229)	68,310
Change in valuation allowance	$ 15,564	(15,564)
Change in tax rate		(2,425)
Other		558
Income Tax Provision (Benefit), Total		$ 810,926

Income Taxes - Provision components (Details)	12 Months Ended
Income Taxes - Provision components (Details)	Dec. 31, 2017 USD ($)
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current taxes, federal	$ 705,682
Current taxes, state	100,763
Current taxes, Total	806,445
Deferred taxes, federal	3,269
Deferred taxes, state	1,212
Deferred taxes, Total	4,481
Income Tax Provision (Benefit), Total	$ 810,926

Income Taxes - Tax assets and liabilities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets (Liabilities)
Accrued professional fees		$ 1,973	$ 3,040
Unrealized gain/loss on investments		(6,454)
Net operating loss carryforwards			12,524
Valuation allowance			$ (15,564)
Net Deferred Tax Asset (Liability)		$ (4,481)
Federal income tax rate		34.00%	35.00%
Scenario, Forecast [Member]
Deferred Tax Assets (Liabilities)
Federal income tax rate	21.00%

Investments and cash held in Trust - (Details)	Dec. 31, 2017 USD ($)
Schedule of Investments [Line Items]
Investments and cash held in Trust Account	$ 402,735,815
US Treasury Securities [Member]
Schedule of Investments [Line Items]
Investments and cash held in Trust Account	402,731,591
Cash [Member]
Schedule of Investments [Line Items]
Investments and cash held in Trust Account	$ 4,224

Fair Value Measurement (Details) - Recurring	Dec. 31, 2017 USD ($)
Measured at fair value on recurring basis
Investments and cash held in Trust Account	$ 402,735,815
Total	402,735,815
Quoted Prices in Active Markets (Level 1)
Measured at fair value on recurring basis
Investments and cash held in Trust Account	402,735,815
Total	$ 402,735,815

Stockholders’ Equity - (Details)	Dec. 31, 2017 Vote $ / shares shares	Dec. 31, 2016 $ / shares shares
Common Stock
Common stock, shares authorized	220,000,000	220,000,000
Number of votes per share \| Vote	1
Common stock, inclusive of shares subject to redemption, number of shares issued and outstanding	40,000,000
Number of shares subject to possible redemption	38,368,855	0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A
Common Stock
Common stock, shares authorized	200,000,000	200,000,000
Common stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Common stock, inclusive of shares subject to redemption, number of shares issued and outstanding	40,000,000
Common stock, shares issued	1,631,145	0
Common stock, shares outstanding	1,631,145	0
Class F
Common Stock
Common stock, shares authorized	20,000,000	20,000,000
Common stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Common stock, shares issued	10,000,000	10,000,000
Common stock, shares outstanding	10,000,000	10,000,000

Label	Element	Value
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	$ (40,959)
Retained Earnings [Member]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	(40,959)
Additional Paid In Capital [Member]
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	$ 23,922
Common Class F [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, New Issues	us-gaap_StockIssuedDuringPeriodSharesNewIssues	10,781,250
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	$ 1,078

Investments and cash held in Trust	12 Months Ended
Investments and cash held in Trust	Dec. 31, 2017
Investments and cash held in Trust
Investments and cash held in Trust	7. Investments and cash held in Trust As of December 31, 2017, investment securities in the Company’s Trust Account consist of $402,731,591 in United States Treasury Bills and $4,224 in cash. The Company classifies its United States Treasury and equivalent securities as held-to-maturity in accordance with FASB ASC 320, “Investments - Debt and Equity Securities.” Held-to-maturity securities are those securities which the Company has the ability and intent to hold until maturity. Held-to-maturity treasury securities are recorded at amortized cost on the accompanying balance sheet and adjusted for the amortization or accretion of premiums or discounts.

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	10. Subsequent Events Management has performed an evaluation of subsequent events through the date of issuance of the financial statements, noting no items which require adjustment or disclosure other than those set forth in the preceding notes to the financial statements.

Deferred Underwriting Compensation	12 Months Ended
Deferred Underwriting Compensation	Dec. 31, 2017
Deferred Underwriting Compensation.
Deferred Underwriting Compensation	5. Deferred Underwriting Compensation The Company is committed to pay a deferred underwriting discount totaling $14,000,000 or 3.50% of the gross offering proceeds of the Public Offering, to the underwriter upon the Company’s consummation of a Business Combination. The underwriter is not entitled to any interest accrued on the Deferred Discount, and no Deferred Discount is payable to the underwriter if there is no Business Combination.