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Long-Term Debt | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Long-Term Debt | Long-Term Debt: Long-term debt consisted of the following at December 31, 2017 and 2016 (in thousands):
| December 31,
| 2017 |  | 2016
1.875% Senior notes, net of unamortized discount and debt issuance costs of $3,971 at December 31, 2017 and $7,823 at December 31, 2016 | 463,575 |  |  | 719,617 |
3.00% Senior notes, net of unamortized discount and debt issuance costs of $1,286 at December 31, 2016 | — |  |  | 248,714 |
4.15% Senior notes, net of unamortized discount and debt issuance costs of $3,372 at December 31, 2017 and $3,859 at December 31, 2016 | 421,628 |  |  | 421,141 |
4.50% Senior notes, net of unamortized discount and debt issuance costs of $891 at December 31, 2017 and $2,380 at December 31, 2016 | 174,325 |  |  | 347,620 |
5.45% Senior notes, net of unamortized discount and debt issuance costs of $4,159 at December 31, 2017 and $4,313 at December 31, 2016 | 345,841 |  |  | 345,687 |
Commercial paper notes | 421,321 |  |  | 247,503 |
Variable-rate foreign bank loans | 5,298 |  |  | 38,939 |
Other | 5,384 |  |  | 41 |
Total long-term debt | 1,837,372 |  |  | 2,369,262 |
Less amounts due within one year | 422,012 |  |  | 247,544 |
Long-term debt, less current portion | $ | 1,415,360 |  |  | $ | 2,121,718 |
Aggregate annual maturities of long-term debt as of December 31, 2017 are as follows (in millions): 2018—$422.0; 2019—$0.2; 2020—$180.5; 2021—$467.5; 2022—$0.0; thereafter—$779.5. Senior Notes In the fourth quarter of 2014, we issued a series of senior notes (collectively, the “2014 Senior Notes”) as follows:
• | €700.0 million aggregate principal amount of senior notes, issued on December 8, 2014, bearing interest at a rate of 1.875% payable annually on December 8 of each year, beginning in 2015. The effective interest rate on these senior notes is approximately 2.10%. These senior notes mature on December 8, 2021.
• | $250.0 million aggregate principal amount of senior notes, issued on November 24, 2014, bearing interest at a rate of 3.00% payable semi-annually on June 1 and December 1 of each year, beginning June 1, 2015. The effective interest rate on these senior notes is approximately 3.18%. These senior notes mature on December 1, 2019.
• | $425.0 million aggregate principal amount of senior notes, issued on November 24, 2014, bearing interest at a rate of 4.15% payable semi-annually on June 1 and December 1 of each year, beginning June 1, 2015. The effective interest rate on these senior notes is approximately 5.06%. These senior notes mature on December 1, 2024.
• | $350.0 million aggregate principal amount of senior notes, issued on November 24, 2014, bearing interest at a rate of 5.45% payable semi-annually on June 1 and December 1 of each year, beginning June 1, 2015. The effective interest rate on these senior notes is approximately 5.50%. These senior notes mature on December 1, 2044.
Our $350.0 million aggregate principal amount of senior notes, issued on December 10, 2010, bear interest at a rate of 4.50% payable semi-annually on June 15 and December 15 of each year. The effective interest rate on these senior notes is approximately 4.70%. These senior notes mature on December 15, 2020. In the first quarter of 2017, using a portion of the proceeds from the sale of the Chemetall Surface Treatment business, we repaid the 3.00% Senior notes in full, €307.0 million of the 1.875% Senior notes and $174.7 million of the 4.50% Senior notes, as well as related tender premiums of $45.2 million. As a result, Interest and financing expenses on the consolidated statements of income i ncludes a loss on early extinguishment of debt of $52.8 million for the year ended December 31, 2017, representing the tender premiums, fees, unamortized discounts and unamortized deferred financing costs from the redemption of these senior notes. Upon completion of the Rockwood acquisition, we assumed Rockwood’s senior notes with an aggregate principal amount of $1.25 billion. Under the terms of the indenture governing the senior notes, as amended and supplemented, on October 15, 2015, our wholly-owned subsidiary, Rockwood Specialties Group, Inc., redeemed all of the outstanding Rockwood senior notes at a redemption price equal to 103.469% of the principal amount of the notes, representing a premium of $43.3 million, plus accrued and unpaid interest to the redemption date. The guarantees of these senior notes and the 2014 Senior Notes were released upon repayment of these senior notes. Included in Interest and financing expenses in our consolidated statements of income and Loss on early extinguishment of debt in our consolidated statements of cash flows for the year ended December 31, 2015 is a loss on early extinguishment of approximately $5.4 million related to these senior notes. Our $325.0 million aggregate principal amount of senior notes, which were issued on January 20, 2005 and bore interest at a rate of 5.10%, matured and were repaid on February 1, 2015. The effective interest rate on these senior notes was approximately 5.19%. On January 22, 2014, we entered into a pay fixed, receive variable rate forward starting interest rate swap, with a notional amount of $325.0 million, with J.P. Morgan Chase Bank, N.A., to be effective October 15, 2014. Our risk management objective and strategy for undertaking this hedge was to eliminate the variability in the interest rate and partial credit spread on the 20 future semi-annual coupon payments that we will pay in connection with our 4.15% senior notes. On October 15, 2014, the swap was settled, resulting in a payment to the counterparty of $33.4 million. This amount was recorded in Accumulated other comprehensive loss and is being amortized to interest expense over the life of the 4.15% senior notes. The amount to be reclassified to interest expense from Accumulated other comprehensive loss during the next twelve months is approximately $3.3 million. On December 18, 2014, the carrying value of the 1.875% Euro-denominated senior notes was designated as an effective hedge of our net investment in foreign subsidiaries where the Euro serves as the functional currency, and beginning on the date of designation, gains or losses on the revaluation of these senior notes to our reporting currency have been and will be recorded in Accumulated other comprehensive loss. During the years ended December 31, 2017, 2016 and 2015, (losses) gains of ($41.8) million, $26.1 million and $50.9 million (net of income taxes), respectively, were recorded in Accumulated other comprehensive loss in connection with the revaluation of these senior notes to our reporting currency. September 2015 Term Loan Agreement The senior notes we assumed from Rockwood were repaid with proceeds from a new term loan agreement we entered into on September 14, 2015 (the “September 2015 Term Loan Agreement”) with JPMorgan Chase Bank, N.A. (the “Administrative Agent”) and certain other lenders. The September 2015 Term Loan Agreement provided for borrowings under a 364-day term loan facility (the “364-Day Facility”) and a five-year term loan facility (the “Five-Year Facility”), or collectively, the “Term loan facilities.” During the year ended December 31, 2016, the Company repaid the 364-Day Facility and Five-Year Facility in full, primarily with proceeds from the sales of the Chemetall Surface Treatment business, the metal sulfides business and the minerals-based flame retardants and specialty chemicals business. The interest rate on both Term loan facilities was LIBOR plus 1.375%. Credit Agreement Our revolving, unsecured credit agreement dated as of February 7, 2014, as amended, (the “February 2014 Credit Agreement”) currently provides for borrowings of up to $1.0 billion and matures on February 7, 2020. Borrowings bear interest at variable rates based on the LIBOR for deposits in the relevant currency plus an applicable margin which ranges from 1.000% to 1.700%, depending on the Company’s credit rating from Standard & Poor’s Ratings Services (“S&P”), Moody’s Investors Services (“Moody’s”) and Fitch Ratings (“Fitch”). The applicable margin on the facility was 1.10% as of December 31, 2017. There were no borrowings outstanding under the February 2014 Credit Agreement as of December 31, 2017. Borrowings under the February 2014 Credit Agreement are conditioned upon compliance with the following covenants: (a) consolidated funded debt, as defined in the agreement, must be less than or equal to 3.50 times consolidated EBITDA, as defined in the agreement, (which reflects adjustments for certain non-recurring or unusual items such as acquisition and integration related costs, utilization of inventory markup, gains or losses on sales of businesses, restructuring charges, facility divestiture charges and other significant non-recurring items), or herein “consolidated adjusted EBITDA,” as of the end of any fiscal quarter; (b) with the exception of certain liens as specified in the agreement, liens may not attach to assets when the aggregate amount of all indebtedness secured by such liens plus unsecured subsidiary indebtedness, other than indebtedness incurred by our subsidiaries under the February 2014 Credit Agreement, would exceed 20% of consolidated net worth, as defined in the agreement; and (c) with the exception of certain indebtedness as specified in the agreement, subsidiary indebtedness may not exceed the difference between 20% of consolidated net worth, as defined in the agreement, and indebtedness secured by liens permitted under the agreement. Commercial Paper Notes On May 29, 2013, we entered into agreements to initiate a commercial paper program on a private placement basis under which we may issue unsecured commercial paper notes (the “Commercial Paper Notes”) from time-to-time up to a maximum aggregate principal amount outstanding at any time of $750.0 million. The proceeds from the issuance of the Commercial Paper Notes are expected to be used for general corporate purposes, including the repayment of other debt of the Company. Our February 2014 Credit Agreement is available to repay the Commercial Paper Notes, if necessary. Aggregate borrowings outstanding under the February 2014 Credit Agreement and the Commercial Paper Notes will not exceed the $1.0 billion current maximum amount available under the February 2014 Credit Agreement. The Commercial Paper Notes will be sold at a discount from par, or alternatively, will be sold at par and bear interest at rates that will vary based upon market conditions at the time of issuance. The maturities of the Commercial Paper Notes will vary but may not exceed 397 days from the date of issue. The definitive documents relating to the commercial paper program contain customary representations, warranties, default and indemnification provisions. Using a portion of the proceeds from the sale of the Chemetall Surface Treatment business, we repaid approximately $153 million of Commercial Paper Notes in December 2016. At December 31, 2017, we had $421.3 million of Commercial Paper Notes outstanding bearing a weighted-average interest rate of approximately 1.80% and a weighted-average maturity of 36 days. August 2014 Term Loan Agreement and Cash Bridge Facility In 2014, we entered into bridge financing arrangements to fund a portion of the cash consideration for the Rockwood acquisition and pay related fees and expenses: (1) a term loan credit agreement providing for a tranche of senior unsecured term loan in an aggregate amount of $1.0 billion and (2) a senior unsecured cash bridge facility (the “Cash Bridge Facility”) pursuant to which the lenders thereunder would provide up to $1.15 billion in loans. In the first quarter of 2015, we borrowed and repaid $1.0 billion under the term loan credit agreement and $800.0 million under the senior unsecured cash bridge facility. The weighted-average interest rate on borrowings under the financing agreements were approximately 1.67%. In connection with bridge financing arrangements, structuring and underwriting fees of approximately $19.0 million were capitalized and expensed over the life of the facilities, $2.3 million of which is reflected in Other (expenses) income, net, in the consolidated statements of income for the year ended December 31, 2015. Financing Costs In 2015, we paid approximately $4.5 million of debt financing costs primarily related to the 2014 Senior Notes, the September 2015 Term Loan Agreement and amendments to the February 2014 Credit Agreement. Other We have additional uncommitted credit lines with various U.S. and foreign financial institutions that provide for borrowings of up to approximately $266 million at December 31, 2017. Outstanding borrowings under these agreements were $5.3 million and $38.9 million at December 31, 2017 and 2016, respectively. The average interest rate on borrowings under these agreements during 2017, 2016 and 2015 was approximately 1.26%, 0.94% and 0.74%, respectively. At December 31, 2017 and 2016, we had the ability and intent to refinance our borrowings under our other existing credit lines with borrowings under the February 2014 Credit Agreement. Therefore, the amounts outstanding under those credit lines, if any, are classified as long-term debt at December 31, 2017 and 2016. At December 31, 2017, we had the ability to borrow $578.7 million under our commercial paper program and the February 2014 Credit Agreement. We believe that as of December 31, 2017, we were, and currently are, in compliance with all of our debt covenants.

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