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Commitments and Contingencies (Details) - USD ($) |  |  |  | 8 Months Ended
--- | --- | --- | --- | ---
Jun. 26, 2020 | Jun. 09, 2020 | Feb. 12, 2020 | Sep. 30, 2020
Underwriting Agreement [Abstract] |  |  |  |
Sale of stock underwriter option term |  |  | 45 days | 45 days
Underwriting fee discount (in dollars per share) |  |  | $ 0.20 | $ 0.20
Underwriting expense |  |  | $ 7,200,000 |
Deferred underwriting discount (in dollars per share) |  |  | $ 0.35 | $ 0.35
Deferred underwriting fees | $ 14,490,000 |  | $ 12,600,000 | $ 14,490,000
Over-Allotment Option [Member] |  |  |  |
Underwriting Agreement [Abstract] |  |  |  |
Units that can be purchased to cover over-allotments (in shares) |  |  | 5,400,000 | 5,400,000
Units issued (in shares) | 1,400,000 | 4,000,000 | 41,400,000 |
Unit price (in dollars per share) | $ 10.00 | $ 10.00 |  |
Underwriting expense |  |  | $ 8,280,000 | $ 8,280,000
Deferred underwriting fees |  |  | $ 14,490,000 |

X
- Definition Per share deferred fee proceeds of an Initial Public Offering paid to the underwriter. + References No definition available. + Details
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Namespace Prefix: | lgvw_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of outstanding underwriting fee payable initially due after one year or beyond the operating cycle if longer, excluding current portion. + References No definition available. + Details
Name: | lgvw_DeferredUnderwritingFeePayableNonCurrent
Namespace Prefix: | lgvw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period of underwriter to purchase options. + References No definition available. + Details
Name: | lgvw_SaleOfStockUnderwriterOptionTerm
Namespace Prefix: | lgvw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | lgvw_UnderwritingAgreementAbstract
Namespace Prefix: | lgvw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or per unit amount of underwriting discount. + References No definition available. + Details
Name: | lgvw_UnderwritingFeeDiscount
Namespace Prefix: | lgvw_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new units issued during the period. Each unit consists of one share of Class A common stock and one redeemable warrant. + References No definition available. + Details
Name: | lgvw_UnitsIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | lgvw_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum number of shares that can be purchased by underwriters to cover over-allotments. + References No definition available. + Details
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Namespace Prefix: | lgvw_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash paid for expenses incurred during underwriting activities (the process to review insurance applications, evaluate risks, accept or reject applications, and determine the premiums to be charged) for insurance companies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585 + Details
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Namespace Prefix: | us-gaap_
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X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
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- Details
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Namespace Prefix: |
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Period Type: |