4. Long-Term Debt

Long-term debt consists of the following:

Senior Secured Credit Facility

On May 4, 2015, the Company amended its prior senior secured credit facility, or the Prior Credit Facility, to extend the maturity date of its revolving credit facility, or the Prior Revolving Credit Facility, by one year to March 9, 2017. Pursuant to this amendment and upon execution, the Company made prepayments of approximately $20.3 million and $50.9 million on its $500 million term loan under the Prior Credit Facility, or the Prior Term Loan, and the Prior Revolving Credit Facility, respectively. Additionally, the Company’s $700 million borrowing capacity on its Prior Revolving Credit Facility was reduced by approximately $235.9 million upon execution of this amendment, and was further reduced by approximately $39.1 million on September 30, 2015. The Prior Term Loan matured on March 9, 2016 and was repaid in full. The total available borrowing capacity under the Prior Revolving Credit Facility was $425.0 million as of December 31, 2016. Prior to March 9, 2016, the interest rates on the Company’s borrowings under the Prior Credit Facility remained effectively unchanged except that the minimum applicable margin was increased by 0.50% and LIBOR was subject to a minimum floor of 0.25%. After March 9, 2016, the applicable interest rates on the Company’s borrowings under the Prior Credit Facility increased by 2.00% such that borrowings under the Prior Credit Facility began bearing 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%, based on the Company’s consolidated leverage ratio. The Company incurred approximately $6.2 million of debt issuance costs in connection with the amendment. These debt issuance costs were recorded on the Company’s consolidated balance sheet and were amortized over the life of the Prior Revolving Credit Facility.

On February 15, 2017, the Company entered into a new $1,450.0 million senior secured credit facility, or the Credit Facility, consisting of a $1,300.0 million term loan B, or the Term Loan, and a $150.0 million revolving credit facility, or the Revolving Credit Facility, with a syndicate of financial institutions as lenders, or Lenders. The Revolving Credit Facility matures on February 15, 2022 and the Term Loan matures on February 15, 2023. However, if the outstanding principal on the Convertible Notes, as defined below, exceeds $250.0 million and the Company exceeds certain leverage ratios on February 14, 2019, the Revolving Credit Facility will mature on such date. In addition, if the outstanding principal on the Convertible Notes, as defined below, exceeds $250.0 million and the Company exceeds certain leverage ratios on May 16, 2019, the Term Loan will mature on such date. The Credit Facility is secured by certain assets of Herbalife Ltd. and certain of its subsidiaries.

The Term Loan was issued to the Lenders at a 2% discount, or $26.0 million. In connection with the Credit Facility, the Company also repaid the $410.0 million outstanding balance on its Prior Revolving Credit Facility. The Company incurred approximately $22.6 million of debt issuance costs in connection with the Credit Facility. The debt issuance costs and the discount are recorded on the Company’s consolidated balance sheet and are being amortized over the life of the Credit Facility using the effective interest method.

Borrowings under the Term Loan bear interest at either the eurocurrency rate plus a margin of 5.50% or the base rate plus a margin of 4.50%. Prior to August 15, 2017, borrowings under the Revolving Credit Facility bore interest at the eurocurrency rate plus a margin of 4.75% or the base rate plus a margin of 3.75%. After August 15, 2017, borrowings under the Revolving Credit Facility, depending on Herbalife’s consolidated leverage ratio, bear interest at either the eurocurrency rate plus a margin of either 4.50% or 4.75% or the base rate plus a margin of either 3.50% or 3.75%. The base rate represents the highest of the Federal Funds Rate plus 0.50%, one-month adjusted LIBOR plus 1.00%, and the prime rate set by Credit Suisse, and is subject to a floor of 1.75%. The eurocurrency rate is based on adjusted LIBOR and is subject to a floor of 0.75%. The Company is required to pay a commitment fee on the Revolving Facility of 0.50% per annum on the undrawn portion of the Revolving Credit Facility. Interest is due at least quarterly on amounts outstanding on the Credit Facility.

The Credit Facility requires the Company to comply with a leverage ratio. In addition, the Credit Facility contains customary events of default and covenants, including covenants that limit or restrict the Company’s ability to incur liens, incur indebtedness, make investments, dispose of assets, make certain restricted payments, pay dividends, repurchase its common shares, merge or consolidate and enter into certain transactions with affiliates. The Company is also required to maintain a minimum balance of $200.0 million of consolidated cash and cash equivalents. As of December 31, 2017 and December 31, 2016, the Company was in compliance with its debt covenants under the Credit Facility and the Prior Credit Facility, respectively.

The Term Loan is payable in consecutive quarterly installments each in an aggregate principal amount of $24.4 million which began on June 30, 2017. In addition, the Company may be required to make mandatory prepayments towards the Term Loan based on the Company’s consolidated leverage ratio and annual excess cash flows as defined under the terms of the Credit Facility. The Company is also permitted to make voluntary prepayments. These prepayments, if any, will be applied against remaining quarterly installments owed under the Term Loan in order of maturity with the remaining principal due upon maturity. The Company currently does not expect to make a mandatory prepayment toward the Term Loan based on its 2017 excess cash flow calculation as defined under the terms of the Credit Facility.

On December 31, 2017 and December 31, 2016, the weighted average interest rate for borrowings under the Credit Facility and the Prior Credit Facility was 6.79% and 4.29%, respectively.

During the year ended December 31, 2017, the Company repaid a total amount of $483.1 million, including $410.0 million to repay in full amounts outstanding on the Prior Revolving Credit Facility. During the year ended December 31, 2016, the Company borrowed an aggregate amount of $200.0 million and paid a total amount of $429.7 million under the Prior Credit Facility. As of December 31, 2017, the U.S. dollar amount outstanding under the Term Loan was $1,226.9 million. There were no borrowings outstanding on the Revolving Credit Facility as of December 31, 2017. As of December 31, 2016, the U.S. dollar amount outstanding under the Prior Revolving Credit Facility was $410.0 million. There were no outstanding foreign currency borrowings as of December 31, 2017 and 2016 under the Credit Facility and the Prior Credit Facility, respectively.

During the year ended December 31, 2017, the Company recognized $82.2 million of interest expense relating to the Term Loan, which included $4.2 million relating to non-cash interest expense relating to the debt discount and $2.8 million relating to amortization of debt issuance costs.

The fair value of the outstanding borrowings on the Term Loan is determined by utilizing over-the-counter market quotes, which are considered Level 2 inputs as described in Note 13, Fair Value Measurements. As of December 31, 2017, the carrying amount of the Term Loan was $1,190.2 million and the fair value was approximately $1,226.1 million. There were no amounts outstanding on the Revolving Credit Facility as of December 31, 2017. The fair value of the outstanding borrowings on the Company’s Prior Revolving Credit Facility approximated its carrying value as of December 31, 2016 due to its variable interest rate which reprices frequently and which represents floating market rates. The fair value of the outstanding borrowings on the Prior Revolving Credit Facility was determined by utilizing Level 2 inputs as described in Note 13, Fair Value Measurements, such as observable market interest rates and yield curves.

Convertible Senior Notes

During February 2014, the Company initially issued $1 billion aggregate principal amount of convertible senior notes, or Convertible Notes, in a private offering to qualified institutional buyers, pursuant to Rule 144A under the Securities Act of 1933, as amended. The Company granted an option to the initial purchasers to purchase up to an additional $150 million aggregate principal amount of Convertible Notes which was subsequently exercised in full during February 2014, resulting in a total issuance of $1.15 billion aggregate principal amount of Convertible Notes. The Convertible Notes are senior unsecured obligations which rank effectively subordinate to any of the Company’s existing and future secured indebtedness, including amounts outstanding under the Credit Facility, to the extent of the value of the assets securing such indebtedness. The Convertible Notes pay interest at a rate of 2.00% per annum payable semiannually in arrears on February 15 and August 15 of each year, beginning on August 15, 2014. The Convertible Notes mature on August 15, 2019, unless earlier repurchased or converted. The Company may not redeem the Convertible Notes prior to their stated maturity date. 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. Upon conversion, the Convertible Notes will be settled in cash and, if applicable, the Company’s common shares, based on the applicable conversion rate at such time. The Convertible Notes had an initial conversion rate of 11.5908 common shares per $1,000 principal amount of the Convertible Notes (which is equal to an initial conversion price of approximately $86.28 per common share).

The Company incurred approximately $26.6 million of issuance costs during the first quarter of 2014 relating to the issuance of the Convertible Notes. Of the $26.6 million issuance costs incurred, $21.5 million and $5.1 million were recorded as debt issuance costs and additional paid-in capital, respectively, in proportion to the allocation of the proceeds of the Convertible Notes. The $21.5 million of debt issuance cost recorded on the Company’s consolidated balance sheet is being amortized over the contractual term of the Convertible Notes using the effective interest method.

During February 2014, the $1.15 billion proceeds received from the issuance of the Convertible Notes were initially allocated between long-term debt, or liability component, and additional paid-in-capital, or equity component, within the Company’s consolidated balance sheet at $930.9 million and $219.1 million, respectively. The liability component was measured using the nonconvertible debt interest rate. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the face value of the Convertible Notes as a whole. Since the Company must still settle these Convertible Notes at face value at or prior to maturity, this liability component will be accreted up to its face value resulting in additional non-cash interest expense being recognized within the Company’s consolidated statements of income while the Convertible Notes remain outstanding. The effective interest rate on the Convertible Notes is approximately 6.2% per annum. The equity component is not remeasured as long as it continues to meet the conditions for equity classification.

As of December 31, 2017, the outstanding principal on the Convertible Notes was $1.15 billion, the unamortized debt discount and debt issuance cost was $80.0 million, and the carrying amount of the liability component was $1,070.0 million, which was recorded to long-term debt within the Company’s consolidated balance sheet as reflected in the table above within this Note. As of December 31, 2016, the outstanding principal on the Convertible Notes was $1.15 billion, the unamortized debt discount and debt issuance costs was $125.2 million, and the carrying amount of the liability component was $1,024.8 million, which was recorded to long-term debt within the Company’s balance sheet as reflected in the table above within this Note. The fair value of the liability component relating to the Convertible Notes was approximately $1,066.0 million and $961.3 million as of December 31, 2017 and 2016, respectively. As of December 31, 2017 and 2016, the Company determined the fair value of the liability component of the Convertible Notes using two valuation methods. The Company reviewed market data that was available for publicly traded, senior, unsecured nonconvertible corporate bonds issued by companies with similar credit ratings. Assumptions used in the estimate represent what market participants would use in pricing the liability component, including market yields and credit standing to develop the straight debt yield estimate. The Company also used a lattice model, which included inputs such as stock price, the Convertible Note trading price, volatility and dividend yield to estimate the straight debt yield. The Company combined the results of the two valuation methods to determine the fair value of the liability component of the Convertible Notes. Most of these inputs are primarily considered Level 2 and Level 3 inputs. This valuation approach was similar to the approach the Company used to determine the initial fair value of the liability component of the Convertible Notes on the February 7, 2014 issuance date.

In conjunction with the issuance of the Convertible Notes, during February 2014, the Company paid approximately $685.8 million to enter into prepaid forward share repurchase transactions, or the Forward Transactions, with certain financial institutions, and paid approximately $123.8 million to enter into capped call transactions with respect to its common shares, or the Capped Call Transactions, with certain financial institutions. See Note 8, Shareholders’ (Deficit) Equity, for additional discussion on the Forward Transactions and Capped Call Transactions entered into in conjunction with the issuance of these Convertible Notes.

During the years ended December 31, 2017, 2016, and 2015, the Company recognized $68.2 million, $65.3 million, and $61.7 million of interest expense relating to the Convertible Notes, respectively, which included $41.2 million, $38.6 million, and $35.7 million relating to non-cash interest expense relating to the debt discount, respectively, and $4.0 million, $3.8 million, $3.2 million relating to amortization of debt issuance costs, respectively.

Total Debt

The Company’s total interest expense, including the Credit Facility, was $160.8 million, $99.3 million, and $100.5 million, for the years ended December 31, 2017, 2016, and 2015, respectively, which was recognized within its consolidated statement of income.

As of December 31, 2017, annual scheduled principal payments of debt were as follows (in millions):

Certain vendors and government agencies may require letters of credit or similar guaranteeing arrangements to be issued or executed. As of December 31, 2017, the Company had $40.8 million of issued but undrawn letters of credit or similar arrangements, which included the Mexico Value Added Tax, or VAT, related surety bonds described in Note 7, Contingencies.