Herbalife Ltd. Annual report pursuant to Section 13 and 15(d)

Segment Information - Reconciliation of Revenue from Segments to Consolidated (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	$ 1,133.6us-gaap_SalesRevenueNet	$ 1,256.2us-gaap_SalesRevenueNet	$ 1,306.2us-gaap_SalesRevenueNet	$ 1,262.6us-gaap_SalesRevenueNet	$ 1,268.9us-gaap_SalesRevenueNet	$ 1,213.5us-gaap_SalesRevenueNet	$ 1,219.2us-gaap_SalesRevenueNet	$ 1,123.7us-gaap_SalesRevenueNet	$ 4,958.6us-gaap_SalesRevenueNet	$ 4,825.3us-gaap_SalesRevenueNet	$ 4,072.3us-gaap_SalesRevenueNet
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales									905.1	886.9	816.9
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales									567.9	562.4	496.1
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales									416.0	433.7	421.4
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales									2,405.3	2,470.7	2,059.4
Primary Reporting Segment [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales									4,294.3	4,353.7	3,793.8
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales									$ 664.3	$ 471.6	$ 278.5