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Segment Information - Reconciliation of Royalty Overrides and Service Fees to China Independent Service Providers from Segments to Consolidated (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total royalty overrides and service fees to China independent service providers | $ 1,782.8 | $ 1,824.2 | $ 1,886.3
Primary Reporting Segment [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total royalty overrides and service fees to China independent service providers | 1,630.3 | 1,656.2 | 1,686.9
China [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total royalty overrides and service fees to China independent service providers | $ 152.5 | $ 168.0 | $ 199.4

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- Definition Royalty overrides and service fees. + References No definition available. + Details
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Namespace Prefix: | hlf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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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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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: |

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- Details
Name: | srt_StatementGeographicalAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
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