Herbalife Ltd. Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Gains (Losses) Relating to Derivative Instruments Recorded to Income (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 0
Selling, general and administrative expenses [Member] \| Foreign exchange currency contracts relating to inventory and intercompany management fee hedges [Member] \| Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(400,000)	$ (100,000)
Selling, general and administrative expenses [Member] \| Foreign exchange currency contracts [Member] \| Derivatives not designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (2,300,000)	$ (6,000,000)