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Related Party Disclosures (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Aug. 31, 2021 | Feb. 28, 2021
Mr. Heng |  |  |
Related Party Transaction [Line Items] |  |  |
Investment | $ 12.1 |  | $ 15.0
Portion of investment sold | 2.9 |  |
Investment, fair value | $ 12.2 |  |
Mr. Simoncini |  |  |
Related Party Transaction [Line Items] |  |  |
Investment |  | $ 1.4 |

X
- Definition Investment Sold, Related Party + References No definition available. + Details
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Namespace Prefix: | lazr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investments, Related Party + References No definition available. + Details
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Namespace Prefix: | lazr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investments, Related Party, Fair Value + References No definition available. + Details
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Namespace Prefix: | lazr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=lazr_MrSimonciniMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |