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Leases - Summary of Annual Scheduled Lease Payments (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Leases [Abstract]
Operating lease legally binding minimum payments for leases not yet commenced	$ 0.3

X

- Definition

Lessee operating minimum lease payment.

+ References

No definition available.

+ Details

Name:	hlf_LesseeOperatingMinimumLeasePayment
Namespace Prefix:	hlf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_LeasesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration