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

Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Additional Information (Detail)

Long-Term Debt - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended	3 Months Ended	1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 28, 2014	Mar. 31, 2014	Mar. 31, 2011	Jul. 31, 2012	Jul. 26, 2012	Mar. 09, 2011
Debt Instrument [Line Items]
Credit facility, amount outstanding	$ 850,000,000us-gaap_LineOfCredit	$ 931,300,000us-gaap_LineOfCredit
Convertible notes initial conversion price	$ 86.28
Additional paid-in capital	409,100,000	323,900,000
Proceeds received from the issuance of the Convertible notes	1,150,000,000us-gaap_ProceedsFromConvertibleDebt
Long-term debt	1,811,700,000us-gaap_LongTermDebt	931,300,000us-gaap_LongTermDebt
Interest expense	91,700,000us-gaap_InterestExpenseDebt	26,600,000us-gaap_InterestExpenseDebt	16,700,000us-gaap_InterestExpenseDebt
Amortization of deferred financing costs	6,800,000us-gaap_AmortizationOfFinancingCosts	2,600,000us-gaap_AmortizationOfFinancingCosts	1,800,000us-gaap_AmortizationOfFinancingCosts
Letters of credit issued but undrawn	36,800,000
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Deferred financing costs					21,500,000
Total principal amount of convertible notes	1,150,000,000			1,150,000,000
Aggregate principal amount of convertible senior notes issued				1,000,000,000
Additional principal amount of convertible notes				150,000,000
Convertible notes, interest rate				2.00%
Convertible notes maturity				Aug. 15, 2019
Convertible notes, conversion feature	Holders of the Convertible Notes may convert their notes at their option under the following circumstances: (i) during any calendar quarter commencing after the calendar quarter ending March 31, 2014, if the last reported sale price of the Company’s common shares for at least 20 trading days (whether or not consecutive) in a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter exceeds 130% of the conversion price for the Convertible Notes on each applicable trading day; (ii) during the five business-day period immediately after any five consecutive trading day period, or the measurement period, in which the trading price per $1,000 principal amount of Convertible Notes for each trading day of that measurement period was less than 98% of the product of the last reported sale price of the Company’s common shares and the conversion rate for the Convertible Notes for each such day; or (iii) upon the occurrence of specified corporate events. On and after May 15, 2019, holders may convert their Convertible Notes at any time, regardless of the foregoing circumstances.
Convertible notes, number of trading days of threshold limit (whether or not consecutive)	20 days
Convertible notes, number of trading days of threshold limit in consecutive days	30 days
Minimum percentage of common share price over conversion price for conversion				130.00%
Principal amount of convertible notes				1,000
Minimum percentage of the product of common share price and conversion rate for convertible notes				98.00%
Convertible notes initial conversion rate				11.5908
Convertible notes initial conversion price				$ 86.28
Issuance costs					26,600,000
Additional paid-in capital				219,100,000
Proceeds received from the issuance of the Convertible notes				1,150,000,000
Long-term debt				930,900,000
Effective interest rate on convertible notes				6.20%
Unamortized debt discount	188,300,000
Convertible senior notes, carrying value of liability component	961,700,000
Fair value of liability to convertible notes	802,800,000
Interest expense	55,100,000
Non-cash interest expense	30,800,000
Amortization of deferred financing costs	3,300,000
Convertible senior notes due	2019
Prepaid forward share repurchase transactions [Member]
Debt Instrument [Line Items]
Additional paid-in capital					31,900,000
Forward share repurchase transactions amount				685,800,000	685,800,000
Capped call transactions [Member]
Debt Instrument [Line Items]
Capped call transactions with financial institutions				123,800,000
Debt Issuance Costs [Member] \| Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Additional paid-in capital					5,100,000
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, maturity period	5 years
Credit facility, expiration date	Mar. 09, 2016
Credit facility borrowings used to repay outstanding borrowings						196,000,000
Deferred financing costs						5,700,000
Long-term debt, weighted average interest rate	3.04%	2.17%
Credit facility, amount borrowed	50,000,000	763,000,000	1,428,000,000
Credit facility, amount paid	131,300,000	319,200,000	1,142,500,000
Credit facility, amount outstanding	850,000,000	931,300,000
Foreign currency borrowings, outstanding	0	0
Aggregate annual maturities of credit facility, 2015	100,000,000
Aggregate annual maturities of credit facility, 2016	750,000,000
Senior Secured Credit Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, maximum amount								500,000,000
Credit facility borrowings used to repay outstanding borrowings							500,000,000
Deferred financing costs							4,500,000
Credit facility, amount outstanding	350,000,000	431,300,000
Senior Secured Credit Facility [Member] \| Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Total principal amount of convertible notes				1,150,000,000
Senior Secured Credit Facility [Member] \| Convertible Notes [Member]
Debt Instrument [Line Items]
Deferred financing costs				2,300,000
Applicable margin payable, percentage				0.50%
Consolidated leverage ratio	2.50 to 1.00
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum amount									700,000,000
Credit facility, amount outstanding	$ 500,000,000	$ 500,000,000
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Credit facility, unused capacity, commitment fee percentage	0.50%
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Credit facility, unused capacity, commitment fee percentage	0.25%
Senior Secured Credit Facility [Member] \| Interest rate option one [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Variable rate basis	LIBOR
Senior Secured Credit Facility [Member] \| Interest rate option one [Member] \| Maximum [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	2.50%
Senior Secured Credit Facility [Member] \| Interest rate option one [Member] \| Minimum [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	1.50%
Senior Secured Credit Facility [Member] \| Interest rate option one [Member] \| Senior secured revolving credit facility [Member]
Debt Instrument [Line Items]
Variable rate basis	LIBOR
Senior Secured Credit Facility [Member] \| Interest rate option one [Member] \| Senior secured revolving credit facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	2.50%
Senior Secured Credit Facility [Member] \| Interest rate option one [Member] \| Senior secured revolving credit facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	1.50%
Senior Secured Credit Facility [Member] \| Interest rate option two [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Variable rate basis	Base rate
Senior Secured Credit Facility [Member] \| Interest rate option two [Member] \| Maximum [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	1.50%
Senior Secured Credit Facility [Member] \| Interest rate option two [Member] \| Minimum [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	0.50%
Senior Secured Credit Facility [Member] \| Interest rate option two [Member] \| Senior secured revolving credit facility [Member]
Debt Instrument [Line Items]
Variable rate basis	The base rate under the Credit Facility represents the highest of the Federal Funds Rate plus 0.50%, the one-month LIBOR plus 1.00%, and the prime rate offered by Bank of America.
Base rate in excess of Federal Funds Rate	0.50%
Base rate in excess of one-month LIBOR	1.00%
Senior Secured Credit Facility [Member] \| Interest rate option two [Member] \| Senior secured revolving credit facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	1.50%
Senior Secured Credit Facility [Member] \| Interest rate option two [Member] \| Senior secured revolving credit facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate	0.50%