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Commitments and Contingencies - Additional Information (Detail) - Non-cancellable Agreements With Vendors - Advertising Media and Other Commitments $ in Millions | 6 Months Ended
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Jun. 30, 2023 USD ($)
Other Commitments [Line Items] |
Minimum non-cancellable commitment | $ 5.3
Non-cancellable commitment pay period | 2 years
Contractual obligation | $ 59.4
Contractual obligation pay period | 5 years
Contractual obligation remainder to be paid | $ 43.2

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- Definition Contractual Obligation Pay Period + References No definition available. + Details
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Namespace Prefix: | lz_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Contractual Obligation, to be Paid, Remaining Amount + References No definition available. + Details
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Namespace Prefix: | lz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Minimum non-cancellable commitment. + References No definition available. + Details
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Namespace Prefix: | lz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Non Cancellable Commitment Pay Period + References No definition available. + Details
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Namespace Prefix: | lz_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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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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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: |

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