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DEBT AND CREDIT FACILITIES | 12 Months Ended
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Dec. 31, 2015
Debt Disclosure [Abstract] |
DEBT AND CREDIT FACILITIES | NOTE 5 - DEBT AND CREDIT FACILITIES The following represents a summary of our long-term debt as of December 31, 2015 and 2014:
($ in Millions) |
December 31, 2015 |
Debt Instrument |  | Type |  | Annual Effective Interest Rate |  | Final Maturity |  | Total Principal Amount |  | Total Debt |
$700 Million 4.875% 2021 Senior Notes |  | Fixed |  | 4.89% |  | 2021 |  | $ | 412.5 |  |  | $ | 410.6 |  | (1)
$1.3 Billion Senior Notes: |  |  |  |  |  |  |  |  |  |  |
$500 Million 4.80% 2020 Senior Notes |  | Fixed |  | 4.83% |  | 2020 |  | 306.7 |  |  | 305.2 |  | (2)
$800 Million 6.25% 2040 Senior Notes |  | Fixed |  | 6.34% |  | 2040 |  | 492.8 |  |  | 482.7 |  | (3)
$400 Million 5.90% 2020 Senior Notes |  | Fixed |  | 5.98% |  | 2020 |  | 290.8 |  |  | 288.9 |  | (4)
$500 Million 3.95% 2018 Senior Notes |  | Fixed |  | 6.30% |  | 2018 |  | 311.2 |  |  | 309.1 |  | (5)
$540 Million 8.25% 2020 First Lien Notes |  | Fixed |  | 9.97% |  | 2020 |  | 540.0 |  |  | 497.4 |  | (6)
$544.2 Million 7.75% 2020 Second Lien Notes |  | Fixed |  | 15.55% |  | 2020 |  | 544.2 |  |  | 403.2 |  | (7)
$550 Million ABL Facility: |  |  |  |  |  |  |  |  |  |  |
ABL Facility |  | Variable |  | N/A |  | 2020 |  | 550.0 |  |  | — |  | (8)
Fair Value Adjustment to Interest Rate Hedge |  |  |  |  |  |  |  |  |  | 2.3 |  |
Total debt |  |  |  |  |  |  |  | $ | 3,448.2 |  |  | $ | 2,699.4 |  |
($ in Millions) |
December 31, 2014 |
Debt Instrument |  | Type |  | Annual Effective Interest Rate |  | Final Maturity |  | Total Face Amount |  | Total Debt |
$700 Million 4.875% 2021 Senior Notes |  | Fixed |  | 4.89% |  | 2021 |  | $ | 690.0 |  |  | $ | 686.0 |  | (1)
$1.3 Billion Senior Notes: |  |  |  |  |  |  |  |  |  |  |
$500 Million 4.80% 2020 Senior Notes |  | Fixed |  | 4.83% |  | 2020 |  | 490.0 |  |  | 487.2 |  | (2)
$800 Million 6.25% 2040 Senior Notes |  | Fixed |  | 6.34% |  | 2040 |  | 800.0 |  |  | 783.3 |  | (3)
$400 Million 5.90% 2020 Senior Notes |  | Fixed |  | 5.98% |  | 2020 |  | 395.0 |  |  | 391.9 |  | (4)
$500 Million 3.95% 2018 Senior Notes |  | Fixed |  | 5.17% |  | 2018 |  | 480.0 |  |  | 475.3 |  | (5)
$1.125 Billion Credit Facility: |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Agreement |  | Variable |  | 2.94% |  | 2017 |  | 1,125.0 |  |  | — |  | (9)
Fair Value Adjustment to Interest Rate Hedge |  |  |  |  |  |  |  |  |  | 2.8 |  |
Long-term debt |  |  |  |  |  |  |  | $ | 3,980.0 |  |  | $ | 2,826.5 |  |
(1) | During the third quarter of 2015, we purchased $10.7 million of outstanding 4.875 percent senior notes that were trading at 50.0 percent of par which resulted in a gain on extinguishment of $5.3 million. In addition, during the first quarter of 2015, we purchased $58.3 million of outstanding 4.875 percent senior notes that were trading at 52.0 percent of par, which resulted in a gain on extinguishment of $20.0 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $208.5 million of the 4.875 percent senior notes for $170.3 million of the 7.75 percent second lien notes at a discount of $46.0 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $83.1 million, net of amounts expensed for unamortized original issue discount and deferred origination fees.
During the fourth quarter of 2014, we purchased $10.0 million of outstanding 4.875 percent senior notes that were trading at a discount of 40.5 percent which resulted in a gain on the extinguishment of debt of $4.1 million. As of December 31, 2015, the $700.0 million 4.875 percent senior notes were recorded at a par value of $412.5 million less debt issuance costs of $1.7 million and unamortized discounts of $0.2 million, based on an imputed interest rate of 4.89 percent. As of December 31, 2014, the $700.0 million 4.875 percent senior notes were recorded at a par value of $690.0 million less debt issuance costs of $3.5 million and unamortized discounts of $0.5 million, based on an imputed interest rate of 4.89 percent.
(2) | During the third quarter of 2015, we purchased $1.8 million of outstanding 4.80 percent senior notes that were trading at 50.0 percent of par, which resulted in a gain on extinguishment of $0.9 million. In addition, during the first quarter of 2015, we purchased $43.8 million of outstanding 4.80 percent senior notes that were trading at 54.3 percent of par, which resulted in a gain on extinguishment of $15.6 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $137.8 million of the 4.80 percent senior notes for $112.9 million of the 7.75 percent second lien notes at a discount of $30.5 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $54.6 million, net of amounts expensed for unamortized original issue discount and deferred origination fees.
During the fourth quarter of 2014, we purchased $10.0 million of outstanding 4.80 percent senior notes that were trading at a discount of 40.25 percent which resulted in a gain on the extinguishment of debt of $4.0 million. As of December 31, 2015, the $500.0 million 4.80 percent senior notes were recorded at a par value of $306.7 million less debt issuance costs of $1.1 million and unamortized discounts of $0.4 million, based on an imputed interest rate of 4.83 percent. As of December 31, 2014, the $500.0 million 4.80 percent senior notes were recorded at a par value of $490.0 million less debt issuance costs of $2.2 million and unamortized discounts of $0.6 million, based on an imputed interest rate of 4.83 percent.
(3) | During the first quarter of 2015, we purchased $45.9 million of outstanding 6.25 percent senior notes that were trading at 52.5 percent of par, which resulted in a gain on extinguishment of $15.0 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $261.3 million of the 6.25 percent senior notes for $203.5 million of the 7.75 percent second lien notes at a discount of $55.0 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $107.3 million, net of amounts expensed for unamortized original issue discount and deferred origination fees.
As of December 31, 2015, the $800.0 million 6.25 percent senior notes were recorded at par value of $492.8 million less debt issuance costs of $4.3 million and unamortized discounts of $5.8 million, based on an imputed interest rate of 6.34 percent. As of December 31, 2014, the $800.0 million 6.25 percent senior notes were recorded at par value of $800.0 million less debt issuance costs of $7.2 million and unamortized discounts of $9.5 million, based on an imputed interest rate of 6.34 percent.
(4) | During the third quarter of 2015, we purchased $36.0 million of outstanding 5.90 percent senior notes that were trading at 50.0 percent of par, which resulted in a gain on extinguishment of $18.0 million. In addition, during the first quarter of 2015, we purchased $1.3 million of outstanding 5.90 percent senior notes that were trading at 58.0 percent of par, which resulted in a gain on extinguishment of $0.3 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $67.0 million of the 5.90 percent senior notes for $57.5 million of the 7.75 percent second lien notes at a discount of $15.5 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $24.5 million, net of amounts expensed for unamortized original issue discount and deferred origination fees.
During the fourth quarter of 2014, we purchased $5.0 million of outstanding 5.90 percent senior notes that were trading at a discount of 38.125 percent which resulted in a gain on the extinguishment of debt of $1.9 million. As of December 31, 2015, the $400.0 million 5.90 percent senior notes were recorded at a par value of $290.8 million less debt issuance costs of $1.1 million and unamortized discounts of $0.8 million, based on an imputed interest rate of 5.98 percent. As of December 31, 2014, the $400.0 million 5.90 percent senior notes were recorded at a par value of $395.0 million less debt issuance costs of $1.8 million and unamortized discounts of $1.3 million, based on an imputed interest rate of 5.98 percent.
(5) | During the third quarter, on August 28, 2015, we purchased for cash as part of a tender offer, $124.8 million of the 3.95 percent senior notes for $68.6 million, resulting in a gain on extinguishment of $54.9 million, net of amounts expensed for reacquisition costs, unamortized original issue discount and deferred origination fees. In addition, during the first quarter of 2015, we purchased $44.0 million of outstanding 3.95 percent senior notes that were trading at 77.5 percent of par, which resulted in a gain on the extinguishment of debt of $7.1 million.
During the fourth quarter of 2014, we purchased $20.0 million of outstanding 3.95 percent senior notes that were trading at a discount of 30.875 percent which resulted in a gain on the extinguishment of debt of $6.2 million. As of December 31, 2015, the $500.0 million 3.95 percent senior notes were recorded at a par value of $311.2 million less debt issuance cost of $0.9 million and unamortized discounts of $1.2 million, based on an imputed interest rate of 6.30 percent. As of December 31, 2014, the $500.0 million 3.95 percent senior notes were recorded at a par value of $480.0 million less debt issuance costs of $2.1 million and unamortized discounts of $2.6 million, based on an imputed interest rate of 5.17 percent.
(6) | As of December 31, 2015, the $540.0 million 8.25 percent first lien notes were recorded at a par value of $540.0 million less debt issuance costs of $10.5 million and unamortized discounts of $32.1 million, based on an imputed interest rate of 9.97 percent.
(7) | As of December 31, 2015, the $544.2 million 7.75 percent second lien notes were recorded at a par value of $544.2 million less debt issuance costs of $9.5 million and unamortized discounts of $131.5 million, based on an imputed interest rate of 15.55 percent. See NOTE 6 - FAIR VALUE OF FINANCIAL INSTRUMENTS for further discussion of unamortized discount as a result of the exchange offers.
(8) | As of December 31, 2015, no loans were drawn under the $550.0 million ABL Facility and we had total availability of $366.0 million as a result of borrowing base limitations. As of December 31, 2015, the principal amount of letter of credit obligations totaled $186.3 million and commodity hedge obligations totaled $0.5 million, thereby further reducing available borrowing capacity on our ABL Facility to $179.2 million.
(9) | As of December 31, 2014, we had no revolving loans drawn under the revolving credit agreement, which had total availability of $1.125 billion as of December 31, 2014. As of December 31, 2014, the principal amount of letter of credit obligations totaled $149.5 million, thereby reducing available borrowing capacity to $975.5 million.
Revolving Credit Facility As of March 30, 2015, we eliminated the revolving credit agreement which was last amended on January 22, 2015 (Amendment No. 6). The revolving credit agreement was replaced with our ABL Facility. As of December 31, 2014, we were in compliance with all applicable financial covenants related to the revolving credit agreement. ABL Facility On March 30, 2015, we entered into a new senior secured asset-based revolving credit facility with various financial institutions. The ABL Facility will mature upon the earlier of March 30, 2020 or 60 days prior to the maturity of the New First Lien Notes (as defined below) and certain other material debt, and provides for up to $550.0 million in borrowings, comprised of (i) a $450.0 million U.S. tranche, including a $250.0 million sublimit for the issuance of letters of credit and a $100.0 million sublimit for U.S. swingline loans, and (ii) a $100.0 million Australian tranche, including a $50.0 million sublimit for the issuance of letters of credit and a $20.0 million sublimit for Australian swingline loans. Availability under both the U.S. tranche and Australian tranche of the ABL Facility is limited to an eligible U.S. borrowing base and Australian borrowing base, as applicable, determined by applying customary advance rates to eligible accounts receivable, inventory and certain mobile equipment. The ABL Facility and certain bank products and hedge obligations are guaranteed by us and certain of our existing wholly-owned U.S. and Australian subsidiaries and are required to be guaranteed by certain of our future U.S. and Australian subsidiaries; provided, however, that the obligations of any U.S. entity will not be guaranteed by any Australian entity. Amounts outstanding under the ABL Facility will be secured by (i) a first-priority security interest in the ABL Collateral (as defined herein), including, in the case of the Australian tranche only, ABL Collateral owned by a borrower or guarantor that is organized under the laws of Australia, and (ii) a third-priority security interest in the Notes Collateral (as defined herein). The priority of the security interests in the ABL Collateral and the Notes Collateral of the lenders under the ABL Facility and the holders of the First Lien Notes are set forth in intercreditor provisions contained in an ABL intercreditor agreement. The ABL Collateral generally consists of the following assets: accounts receivable and other rights to payment, inventory, as-extracted collateral, investment property, certain general intangibles and commercial tort claims, certain mobile equipment, commodities accounts, deposit accounts, securities accounts and other related assets and proceeds and products of each of the foregoing. Borrowings under the ABL Facility bear interest, at our option, at a base rate, an Australian base rate or, if certain conditions are met, a LIBOR rate, in each case plus an applicable margin. The base rate is equal to the greater of the federal funds rate plus ½ of 1 percent, the LIBOR rate based on a one-month interest period plus 1 percent and the floating rate announced by BAML as its “prime rate.” The Australian base rate is equal to the LIBOR rate as of 11:00 a.m. on the first business day of each month for a one-month period. The LIBOR rate is a per annum fixed rate equal to LIBOR with respect to the applicable interest period and amount of LIBOR rate loan requested. The ABL Facility contains customary representations and warranties and affirmative and negative covenants including, among others, covenants regarding the maintenance of certain financial ratios if certain conditions are triggered, covenants relating to financial reporting, covenants relating to the payment of dividends on, or purchase or redemption of our capital stock, covenants relating to the incurrence or prepayment of certain debt, covenants relating to the incurrence of liens or encumbrances, compliance with laws, transactions with affiliates, mergers and sales of all or substantially all of our assets and limitations on changes in the nature of our business. The ABL Facility provides for customary events of default, including, among other things, the event of nonpayment of principal, interest, fees, or other amounts, a representation or warranty proving to have been materially incorrect when made, failure to perform or observe certain covenants within a specified period of time, a cross-default to certain material indebtedness, the bankruptcy or insolvency of the Company and certain of its subsidiaries, monetary judgment defaults of a specified amount, invalidity of any loan documentation, a change of control of the Company, and ERISA defaults resulting in liability of a specified amount. In the event of a default by us (beyond any applicable grace or cure period, if any), the administrative agent may and, at the direction of the requisite number of lenders, shall declare all amounts owing under the ABL Facility immediately due and payable, terminate such lenders’ commitments to make loans under the ABL Facility and/or exercise any and all remedies and other rights under the ABL Facility. For certain defaults related to insolvency and receivership, the commitments of the lenders will be automatically terminated and all outstanding loans and other amounts will become immediately due and payable. As of December 31, 2015, we were in compliance with the ABL Facility liquidity requirements and, therefore, the springing financial covenant requiring a minimum fixed charge coverage ratio of 1.0 to 1.0 was not applicable. $540 Million 8.25 percent 2020 Senior Secured First Lien Notes - 2015 Offering On March 30, 2015, we entered into an indenture among the Company, the guarantors party thereto and U.S. Bank National Association, as trustee and notes collateral agent, relating to our issuance of $540 million aggregate principal amount of 8.25 percent Senior First Lien Notes due 2020 (the "First Lien Notes"). The First Lien Notes were sold on March 30, 2015 in a private transaction exempt from the registration requirements of the Securities Act. The First Lien Notes bear interest at a rate of 8.25 percent per annum. Interest on the First Liens Notes is payable semi-annually in arrears on March 31 and September 30 of each year, commencing on September 30, 2015. The First Lien Notes mature on March 31, 2020 and are secured senior obligations of the Company. The First Lien Notes are jointly and severally and fully and unconditionally guaranteed on a senior secured basis by substantially all of our material U.S. subsidiaries and are secured (subject in each case to certain exceptions and permitted liens) by (i) a first-priority lien on substantially all of our U.S. assets, other than the ABL Collateral (the "Notes Collateral"), and (ii) a second-priority lien on the U.S. ABL Collateral, which is junior to a first-priority lien for the benefit of the lenders under the ABL Facility. The First Lien Notes and guarantees are general senior obligations of the Company and the applicable guarantor; are effectively senior to all of our unsecured indebtedness, to the extent of the value of the collateral; together with other obligations secured equally and ratably with the First Lien Notes, are effectively (i) senior to our existing and future ABL obligations, to the extent and value of the Notes Collateral and (ii) senior to our obligations under the Second Lien Notes, to the extent and value of the collateral; are effectively subordinated to (i) our existing and future ABL obligations, to the extent and value of the ABL Collateral, and (ii) any existing or future indebtedness that is secured by liens on assets that do not constitute a part of the collateral, to the extent of the value of such assets; will rank equally in right of payment with all existing and future senior indebtedness, and any guarantees thereof; will rank equally in priority as to the Notes Collateral with any future debt secured equally and ratably with the First Lien Notes incurred after March 30, 2015; rank senior in right of payment to all existing and future subordinated indebtedness; and structurally subordinated to all existing and future indebtedness and other liabilities of our subsidiaries that do not guarantee the First Lien Notes. The relative priority of the liens securing our First Lien Notes obligations and Second Lien Notes obligations compared to the liens securing our obligations under the ABL Facility and certain other matters relating to the administration of security interests are set forth in intercreditor agreements. The terms of the First Lien Notes are governed by the First Lien Notes indenture. The First Lien Notes indenture contains customary covenants that, among other things, limit our ability to incur secured indebtedness, create liens on principal property and the capital stock or debt of a subsidiary that owns a principal property, use proceeds of dispositions of collateral, enter into sale and leaseback transactions, merge or consolidate with another company, and transfer or sell all or substantially all of our assets. Upon the occurrence of a “change of control triggering event,” as defined in the indenture, we are required to offer to repurchase the First Lien Notes at 101 percent of the aggregate principal amount thereof, plus any accrued and unpaid interest, if any, to, but excluding, the repurchase date. We may redeem any of the First Lien Notes beginning on March 31, 2018. The initial redemption price is 108.25 percent of their principal amount, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. The redemption price will decline after 2018 and will be 100 percent of their principal amount, plus accrued interest, beginning on June 30, 2019. We may also redeem some or all of the First Lien Notes at any time and from time to time prior to March 31, 2018 at a price equal to 100 percent of the principal amount thereof plus a “make-whole” premium, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. In addition, at any time and from time to time on or prior to March 31, 2018, we may redeem in the aggregate up to 35 percent of the original aggregate principal amount of the First Lien Notes (calculated after giving effect to any issuance of additional First Lien Notes) with the net cash proceeds of certain equity offerings, at a redemption price of 108.25 percent, plus accrued and unpaid interest, if any, to, but excluding, the redemption date, so long as at least 65 percent of the original aggregate principal amount of the First Lien Notes (calculated after giving effect to any issuance of additional First Lien Notes) issued under the First Lien Notes indenture remain outstanding after each such redemption. The First Lien Notes indenture contains customary events of default, including failure to make required payments, failure to comply with certain agreements or covenants, failure to pay or acceleration of certain other indebtedness, certain events of bankruptcy and insolvency, and failure to pay certain judgments. An event of default under the First Lien indenture will allow either the trustee or the holders of at least 25 percent in aggregate principal amount of the then-outstanding First Lien Notes issued under such indenture to accelerate, or in certain cases, will automatically cause the acceleration of the amounts due under the First Lien Notes. $544 Million 7.75 percent 2020 Senior Secured Second Lien Notes - 2015 Offering On March 30, 2015, we also entered into an indenture among the Company, the guarantors and U.S. Bank National Association, as trustee and notes collateral agent, relating to our issuance of $544.2 million aggregate principal amount of 7.75 percent second lien senior secured notes due 2020 (the "Second Lien Notes"). The Second Lien Notes were issued on March 30, 2015 in exchange offers for certain of our existing senior notes. The Second Lien Notes bear interest at a rate of 7.75 percent per annum. Interest on the Second Lien Notes is payable semi-annually in arrears on March 31 and September 30 of each year, commencing on September 30, 2015. The Second Lien Notes mature on March 31, 2020 and are secured senior obligations of the Company. The Second Lien Notes have substantially similar terms to those of the First Lien Notes except with respect to their priority security interest in the collateral. The Second Lien Notes are jointly and severally and fully and unconditionally guaranteed on a senior secured basis by substantially all of our material U.S. subsidiaries and are secured (subject in each case to certain exceptions and permitted liens) by (i) a second-priority lien (junior to the First Lien Notes) on substantially all of our U.S. assets, other than the ABL Collateral, and (ii) a third-priority lien (junior to the ABL Facility and the First Lien Notes) on the U.S. ABL Collateral. The Company may redeem any of the Second Lien Notes beginning on March 31, 2017. The initial redemption price is 103.875 percent of their principal amount, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. The redemption price will decline each year after March 31, 2017 and will be 100 percent of their principal amount, plus accrued interest, beginning on March 31, 2019. The Company may also redeem some or all of the Second Lien Notes at any time and from time to time prior to March 31, 2017 at a price equal to 100 percent of the principal amount thereof plus a “make-whole” premium, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. In addition, at any time and from time to time on or prior to March 31, 2017, the Company may redeem in the aggregate up to 35 percent of the original aggregate principal amount of the Second Lien Notes (calculated after giving effect to any issuance of additional Second Lien Notes) with the net cash proceeds of certain equity offerings, at a redemption price of 107.75 percent, plus accrued and unpaid interest, if any, to, but excluding, the redemption date, so long as at least 65 percent of the original aggregate principal amount of the Second Lien Notes (calculated after giving effect to any issuance of additional Second Lien Notes) issued under the Second Lien Notes Indenture remain outstanding after each such redemption. $500 Million Senior Notes — 2012 Offering On December 6, 2012, we completed a $500 million public offering of senior notes at 3.95 percent due January 15, 2018. Interest is fixed and is payable on January 15 and July 15 of each year, beginning on July 15, 2013 until maturity. The senior notes are unsecured obligations and rank equally in right of payment with all our other existing and future unsecured and unsubordinated indebtedness. There are no subsidiary guarantees of the interest and principal amounts. The senior notes may be redeemed any time at our option not less than 30 days nor more than 60 days after prior notice is sent to the holders of the applicable series of notes. The senior notes are redeemable at a redemption price equal to the greater of (1) 100 percent of the principal amount of the notes to be redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest on the notes to be redeemed, discounted to the redemption date on a semi-annual basis at the treasury rate plus 50 basis points with respect to the 2018 senior notes, plus, in each case, accrued and unpaid interest to the date of redemption. In addition, if a change of control triggering event occurs with respect to the senior notes, as defined in the agreement, we will be required to offer to purchase the notes of the applicable series at a purchase price equal to 101 percent of the principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The terms of the senior notes contain certain customary covenants; however, there are no financial covenants. Interest Rate Adjustment Based on Rating Events The interest rate payable on the $500.0 million 3.95 percent senior notes may be subject to adjustments from time to time if either Moody's or S&P or, in either case, any Substitute Rating Agency thereof downgrades (or subsequently upgrades) the debt rating assigned to the senior notes. In no event shall (1) the interest rate for the senior notes be reduced to below the interest rate payable on the senior notes on the date of the initial issuance of senior notes or (2) the total increase in the interest rate on the senior notes exceed 2.00 percent above the interest rate payable on the senior notes on the date of the initial issuance of senior notes. During 2014, the interest rate payable on the $500.0 million 3.95 percent senior notes was increased from 3.95 percent ultimately to 5.70 percent based on Substitute Rating Agency downgrades throughout the year. During the first quarter of 2015, subsequent to a downgrade, the interest rate was further increased and is currently at the maximum interest rate of 5.95 percent per annum. $1 Billion Senior Notes — 2011 Offering On March 23, 2011 and April 1, 2011, respectively, we completed a $1 billion public offering of senior notes consisting of two tranches: a 10-year tranche of $700 million aggregate principal amount at 4.88 percent senior notes due April 1, 2021, and a 30-year tranche of $300 million aggregate principal amount at 6.25 percent senior notes due October 1, 2040, of which $500 million aggregate principal amount previously was issued during September 2010. Interest is fixed and is payable on April 1 and October 1 of each year, beginning on October 1, 2011, for both series of senior notes until maturity. The senior notes are unsecured obligations and rank equally in right of payment with all our other existing and future unsecured and unsubordinated indebtedness. There are no subsidiary guarantees of the interest and principal amounts. The net proceeds from the senior notes offering were used to fund a portion of the acquisition of Consolidated Thompson and to pay the related fees and expenses. The senior notes may be redeemed any time at our option not less than 30 days nor more than 60 days after prior notice is sent to the holders of the applicable series of notes. The senior notes are redeemable at a redemption price equal to the greater of (1) 100 percent of the principal amount of the notes to be redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest on the notes to be redeemed, discounted to the redemption date on a semi-annual basis at the treasury rate plus 25 basis points with respect to the 2021 senior notes and 40 basis points with respect to the 2040 senior notes, plus, in each case, accrued and unpaid interest to the date of redemption. However, if the 2021 senior notes are redeemed on or after the date that is three months prior to their maturity date, the 2021 senior notes will be redeemed at a redemption price equal to 100 percent of the principal amount of the notes to be redeemed plus accrued and unpaid interest to the date of redemption. In addition, if a change of control triggering event occurs with respect to the senior notes, as defined in the agreement, we will be required to offer to purchase the notes of the applicable series at a purchase price equal to 101 percent of the principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The terms of the senior notes contain certain customary covenants; however, there are no financial covenants. $1 Billion Senior Notes — 2010 Offering On September 20, 2010, we completed a $1 billion public offering of senior notes consisting of two tranches: a 10-year tranche of $500 million aggregate principal amount at 4.80 percent due October 1, 2020, and a 30-year tranche of $500 million aggregate principal amount at 6.25 percent due October 1, 2040. Interest is fixed and is payable on April 1 and October 1 of each year, beginning on April 1, 2011, for both series of senior notes until maturity. The senior notes are unsecured obligations and rank equally in right of payment with all of our other existing and future senior unsecured and unsubordinated indebtedness. There are no subsidiary guarantees of the interest and principal amounts. A portion of the net proceeds from the senior notes offering was used on September 22, 2010 to repay $350 million outstanding under our credit facility. A portion of the net proceeds was also used for general corporate purposes, including funding of capital expenditures and were used to fund a portion of the acquisition of Consolidated Thompson and related expenses. The senior notes may be redeemed any time at our option not less than 30 days nor more than 60 days after prior notice is sent to the holders of the applicable series of notes. The senior notes are redeemable at a redemption price equal to the greater of (1) 100 percent of the principal amount of the notes to be redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest on the notes to be redeemed, discounted to the redemption date on a semi-annual basis at the treasury rate plus 35 basis points with respect to the 2020 senior notes and 40 basis points with respect to the 2040 senior notes, plus, in each case, accrued and unpaid interest to the date of redemption. In addition, if a change of control triggering event occurs with respect to the notes, we will be required to offer to purchase the notes at a purchase price equal to 101 percent of the principal amount, plus accrued and unpaid interest to the date of purchase. The terms of the senior notes contain certain customary covenants; however, there are no financial covenants. $400 Million Senior Notes Offering — 2010 Offering On March 17, 2010, we completed a $400 million public offering of senior notes due March 15, 2020. Interest at a fixed rate of 5.90 percent is payable on March 15 and September 15 of each year, beginning on September 15, 2010, until maturity on March 15, 2020. The senior notes are unsecured obligations and rank equally in right of payment with all of our other existing and future senior unsecured and unsubordinated indebtedness. There are no subsidiary guarantees of the interest and principal amounts. A portion of the net proceeds from the senior notes offering was used on March 31, 2010 to repay our $200 million term loan under our credit facility, as well as to repay on May 27, 2010 our share of Amapá’s remaining debt outstanding of $100.8 million. In addition, we used the remainder of the net proceeds to help fund the acquisitions of Spider and CLCC during the third quarter of 2010. The senior notes may be redeemed any time at our option not less than 30 days nor more than 60 days after prior notice is sent to the holders of the applicable series of notes. The senior notes are redeemable at a redemption price equal to the greater of (1) 100 percent of the principal amount of the notes to be redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest on the notes to be redeemed, discounted to the redemption date on a semi-annual basis, plus accrued and unpaid interest to the date of redemption. In addition, if a change of control triggering event occurs, we will be required to offer to purchase the notes at a purchase price equal to 101 percent of the principal amount, plus accrued and unpaid interest to the date of purchase. The terms of the senior notes contain certain customary covenants; however, there are no financial covenants. Letters of Credit We issued standby letters of credit with certain financial institutions in order to support business obligations including, but not limited to, workers compensation and environmental obligations. As of December 31, 2015 and December 31, 2014, these letter of credit obligations totaled $186.3 million and $149.5 million, respectively. Debt Maturities The following represents a summary of our maturities of debt instruments, excluding borrowings on the ABL Facility, based on the principal amounts outstanding at December 31, 2015:
| (In Millions)
| Maturities of Debt
2016 | $ | — |
2017 | — |
2018 | 311.2 |
2019 | — |
2020 | 1,681.7 |
2021 and thereafter | 905.3 |
Total maturities of debt | $ | 2,898.2 |

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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