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

Segment Information - Reconciliation of Revenue from Segments to Consolidated (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	$ 1,105.4us-gaap_SalesRevenueNet	$ 1,262.6us-gaap_SalesRevenueNet
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	221.9	242.3
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	123.6	142.7
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	71.8	99.0
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	523.9	642.8
Primary Reporting Segment [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	941.2	1,126.8
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	$ 164.2	$ 135.8