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Transformation Program - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total cost of transformation program | $ 3.2 | $ 3.7 | $ 4.8 | $ 3.7
Maximum [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected Pre-tax charges |  |  | 30.0 |
Minimum [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected Pre-tax charges |  |  | $ 25.0 |

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- Definition Pre-tax Charge, Total + References No definition available. + Details
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Namespace Prefix: | hlf_
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- Definition Total cost of transformation program. + 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_
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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_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |