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

Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Additional Information (Detail)

Long-Term Debt - Additional Information (Detail) - USD ($)			1 Months Ended			3 Months Ended					9 Months Ended
	Sep. 30, 2015	May. 04, 2015	Feb. 28, 2014	Jul. 31, 2012	Mar. 31, 2011	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jul. 26, 2012	Mar. 09, 2011
Debt Instrument [Line Items]
Issuance costs		$ 6,200,000
Allowable annual dividend payment or repurchase of common stock under credit facility											$ 233,000,000
Credit facility terms description											The Credit Facility restricts the Company’s ability to pay dividends or repurchase its common shares to a maximum of $233.0 million until maturity and for every one dollar of share repurchase or dividend paid, the revolving credit facility’s borrowing capacity is permanently decreased by two dollars.
Borrowings under the senior secured credit facility	$ 664,700,000					$ 664,700,000					$ 664,700,000		$ 850,000,000
Paid-in-capital in excess of par value	436,300,000					436,300,000					436,300,000		409,100,000
Proceeds received from the issuance of the Convertible notes												$ 1,150,000,000
Long-term debt	1,653,400,000					1,653,400,000					1,653,400,000		1,811,700,000
Convertible senior notes, carrying value of liability component	988,700,000					988,700,000					988,700,000		$ 961,700,000
Interest expense						25,500,000			$ 24,000,000		73,700,000	66,000,000
Write off of unamortized deferred financing cost											600,000
Letters of credit issued but undrawn	33,800,000					33,800,000					33,800,000
Prepaid forward share repurchase transactions [Member]
Debt Instrument [Line Items]
Paid-in-capital in excess of par value										$ (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
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					1,150,000,000
Issuance costs										26,600,000
Paid-in-capital in excess of par value			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	161,300,000					161,300,000					161,300,000
Convertible senior notes, carrying value of liability component	988,700,000					988,700,000					988,700,000
Fair value of liability to convertible notes	$ 847,800,000					847,800,000					847,800,000
Interest expense						16,000,000			15,400,000		46,800,000	39,400,000
Non-cash interest expense						9,300,000			8,700,000		27,000,000	22,000,000
Amortization of deferred financing costs						$ 900,000			$ 900,000		$ 2,800,000	$ 2,400,000
Convertible Senior Notes [Member] \| Debt Issuance Costs [Member]
Debt Instrument [Line Items]
Paid-in-capital in excess of par value										$ 5,100,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Total principal amount of convertible notes			$ 1,150,000,000
Debt maturity date			Aug. 15, 2019
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, 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					$ 86.28			$ 86.28		$ 86.28	$ 86.28
Convertible Debt [Member] \| Capped call transactions [Member]
Debt Instrument [Line Items]
Convertible notes initial conversion price			$ 86.28
Senior secured revolving credit facility [Member]
Debt Instrument [Line Items]
Amount required to maintain on consolidated cash and cash equivalents											$ 200,000,000
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility borrowings used to repay outstanding borrowings					$ 196,000,000
Deferred financing costs					$ 5,700,000
Credit facility amendment date											May 04, 2015
Variable rate basis											Credit Facility now bear interest at either LIBOR plus the applicable margin between 2.00% and 3.00% or the base rate plus the applicable margin between 1.00% and 2.00%.
Credit facility interest rate description											Until March?9, 2016, the interest rates on the Company?s borrowings under the Credit Facility, as amended, will effectively remain unchanged except that the minimum applicable margin will be increased by 0.50% and LIBOR will have a minimum floor of 0.25%. After March 9, 2016, the applicable interest rates on the Company?s borrowings under the Credit Facility, as amended, will increase by 2.00% such that borrowings under the Credit Facility will bear interest at either LIBOR plus the applicable margin between 4.00% and 5.00% or the base rate plus the applicable margin between 3.00% and 4.00%.
Long-term debt, weighted average interest rate	2.76%					2.76%					2.76%		3.04%
Credit facility, amount repaid						$ 25,000,000	$ 135,300,000	$ 25,000,000
Borrowings under the senior secured credit facility	$ 664,700,000					664,700,000					$ 664,700,000		$ 850,000,000
Foreign currency borrowings, outstanding	0					0					0		0
Aggregate annual maturities of credit facility, remainder of 2015	25,000,000					25,000,000					25,000,000
Aggregate annual maturities of credit facility, 2016	229,700,000					229,700,000					229,700,000
Aggregate annual maturities of credit facility, 2017	410,000,000					410,000,000					410,000,000
Aggregate annual maturities of credit facility, 2019	1,150,000,000					1,150,000,000					$ 1,150,000,000
Senior Secured Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Variable rate basis											Facility will bear interest at either LIBOR plus the applicable margin between 4.00% and 5.00% or the base rate plus the applicable margin between 3.00% and 4.00%
Senior Secured Credit Facility [Member] \| Until March 9, 2016 [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate increase by percentage		0.50%
Senior Secured Credit Facility [Member] \| After March 9, 2016 [Member]
Debt Instrument [Line Items]
Interest rate increased by percentage		2.00%
Senior Secured Credit Facility [Member] \| After March 9, 2016 [Member] \| LIBOR [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		4.00%
Senior Secured Credit Facility [Member] \| After March 9, 2016 [Member] \| LIBOR [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		5.00%
Senior Secured Credit Facility [Member] \| After March 9, 2016 [Member] \| Base Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		3.00%
Senior Secured Credit Facility [Member] \| After March 9, 2016 [Member] \| Base Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		4.00%
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
Debt maturity date		Mar. 09, 2016
Credit facility prepayments		$ 20,300,000
Borrowings under the senior secured credit facility	254,700,000					254,700,000					$ 254,700,000		350,000,000
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 Debt [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	425,000,000					425,000,000					$ 425,000,000				$ 700,000,000
Line of credit facility extended maturity period											1 year
Credit facility prepayments		$ 50,900,000
Amended maturity date of credit facility		Mar. 09, 2017
Decreased amount in credit facility borrowing capacity	(39,100,000)	$ (235,900,000)
Borrowings under the senior secured credit facility	$ 410,000,000					$ 410,000,000					$ 410,000,000		$ 500,000,000
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage											0.40%
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage											0.50%
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Credit facility LIBOR minimum floor rate interest		0.25%
Variable rate basis											LIBOR
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| LIBOR [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		2.00%
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| LIBOR [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		3.00%
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| Base Rate [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] \| Senior secured revolving credit facility [Member] \| Base Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		1.00%
Senior Secured Credit Facility [Member] \| Senior secured revolving credit facility [Member] \| Base Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate spread on variable rate		2.00%