markets or model-derived-valuations with observable inputs. We have no marketable securities whose fair value is subject to unobservable inputs. Total pretax unrealized losses recorded in accumulated other comprehensive income at August 31, 2017 and May 31, 2017 were $3.4 million and $3.5 million, respectively.
We regularly review our marketable securities in unrealized loss positions in order to determine whether or not we have the ability and intent to hold these investments. That determination is based upon the severity and duration of the decline, in addition to our evaluation of the cash flow requirements of our businesses. Unrealized losses at August 31, 2017 were generally related to the normal volatility in valuations over the past several months for a portion of our portfolio of investments in marketable securities. The unrealized losses generally relate to investments whose fair values at August 31, 2017 were less than 15% below their original cost or that have been in a loss position for less than six consecutive months. From time to time, we may experience significant volatility in general economic and market conditions. If we were to experience unrealized losses that were to continue for longer periods of time, or arise to more significant levels of unrealized losses within our portfolio of investments in marketable securities in the future, we may recognize additional other-than-temporary impairment losses. Such potential losses could have a material impact on our results of operations in any given reporting period. As such, we continue to closely evaluate the status of our investments and our ability and intent to hold these investments.
As of August 31, 2017, approximately $195.2 million of our consolidated cash and cash equivalents were held at various foreign subsidiaries. Undistributed earnings held at our foreign subsidiaries that are considered permanently reinvested will be used, for instance, to expand operations organically or for acquisitions in foreign jurisdictions. Further, our operations in the U.S. generate sufficient cash flow to satisfy U.S. operating requirements. Refer to Note 7, “Income Taxes,” to the Consolidated Financial Statements for additional information regarding unremitted foreign earnings.
Our available liquidity, including our cash and cash equivalents and amounts available under our committed credit facilities, stood at $1.0 billion at August 31, 2017. Our debt-to-capital ratio was 57.6% at August 31, 2017, compared with 59.3% at May 31, 2017.
5.250% Notes due 2045 and 3.750% Notes due 2027
On March 2, 2017, we issued $50.0 million aggregate principal amount of 5.250% Notes due 2045 (the “2045 Notes”) and $400.0 million aggregate principal amount of 3.750% Notes due 2027 (the “2027 Notes”). The 2045 Notes are a further issuance of the $250 million aggregate principal amount of 5.250% Notes due 2045 initially issued by us on May 29, 2015. Interest on the 2045 Notes accrues from December 1, 2016 and is payable semiannually in arrears on June 1st and December 1st of each year, beginning June 1, 2017, at a rate of 5.250% per year. The 2045 Notes mature on June 1, 2045. Interest on the 2027 Notes accrues from March 2, 2017 and is payable semiannually in arrears on March 15th and September 15th of each year, beginning September 15, 2017, at a rate of 3.750% per year. The 2027 Notes mature on March 15, 2027. The indenture governing this indebtedness includes cross-acceleration provisions. Under certain circumstances, where an event of default under our other instruments results in acceleration of the indebtedness under such instruments, holders of the indebtedness under the indenture are entitled to declare amounts outstanding immediately due and payable.
Revolving Credit Agreement
During fiscal 2015, we entered into an $800.0 million unsecured syndicated revolving credit facility (the “New Revolving Credit Facility”), which expires on December 5, 2019. The New Revolving Credit Facility replaced our prior $600.0 million revolving credit facility.
The New Revolving Credit Facility includes sublimits for the issuance of swingline loans, which are comparatively short-term loans used for working capital purposes and letters of credit. The aggregate maximum principal amount of the commitments under the New Revolving Credit Facility may be expanded upon our request, subject to certain conditions, up to $1.0 billion. The New Revolving Credit Facility is available to refinance existing indebtedness, to finance working capital and capital expenditures, to satisfy all or a portion of our obligations relating to the plan of reorganization for our SPHC subsidiary, and for general corporate purposes.
The New Revolving Credit Facility requires us to comply with various customary affirmative and negative covenants, including a leverage covenant and interest coverage ratio, which are calculated in accordance with the terms as defined by the credit agreement. Under the terms of the leverage covenant, we may not permit our consolidated indebtedness as of any fiscal quarter end to exceed 65% of the sum of such indebtedness and our consolidated shareholders’ equity on such date. The minimum required consolidated interest coverage ratio for EBITDA to interest expense is 3.50 to 1. The interest coverage ratio is calculated at the end of each fiscal quarter for the four fiscal quarters then ended using an EBITDA as defined in the credit agreement.
RPM International Inc. (NYSE: RPM) owns subsidiaries that are world leaders in coatings, sealants, building materials and related services. From homes to precious landmarks worldwide, their brands are trusted by consumers and professionals alike to protect, improve and beautify. Among its leading consumer brands are Rust-Oleum, DAP and Zinsser. Learn more about RPM brands >>
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