Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Our primary market risk exposures relate to foreign currency exchange rate risk and interest rate risk.
Foreign Currency Risk
Our exposure to fluctuations in foreign currency exchange rates is primarily the result of foreign subsidiaries domiciled in the United Kingdom, the Netherlands, and India. We have not used financial derivative instruments to hedge foreign currency exchange rate risks associated with our foreign subsidiaries.
The assets and liabilities of our British, Dutch, and Indian subsidiaries, whose functional currencies are the British pound, Euro, and Indian rupee, respectively, are translated into U.S. dollars at exchange rates in effect at the balance sheet date. Income and expense items are translated at the average exchange rates prevailing during the period. The cumulative translation effects for subsidiaries using a functional currency other than the U.S. dollar are included in accumulated other comprehensive loss as a separate component of stockholders’ equity. We estimate that had the exchange rate in each country unfavorably changed by 10% relative to the U.S. dollar, our consolidated income before income tax would have decreased by approximately $2.2 million for 2021.
Interest Rate Risk
Interest rate exposure relates primarily to the effect of interest rate changes on borrowings outstanding under our revolving credit facility and term loan facilities that are subject to variable interest rates, and on our investments in marketable debt securities. We entered into variable-to-fixed interest rate swap agreements to mitigate the exposure to variable interest arrangements. In October 2021, our interest rate swap agreements matured and therefore we had no interest rate swap agreements in a cash flow hedging relationship as of December 31, 2021. Our interest rate swaps had an underlying fixed notional amount of $500 million subject to a total interest rate of approximately 3.65%.
In June 2020, we entered into interest rate cap agreements with a total notional value of $800 million, designated and accounted for as cash flow hedges from inception, to provide us with interest rate protection in the event the one-month LIBOR rate increases above 1%. Interest rate cap agreements for $300 million notional value have an effective date of June 30, 2020 and expire on October 31, 2023, while interest rate cap agreements for another $500 million notional amount have a forward starting effective date of October 29, 2021 and expire on October 31, 2023.
In December 2021, we entered into additional interest rate cap agreements with a total notional value of $900 million, and are designated and accounted for as cash flow hedges from inception. Interest rate cap agreements for $600 million, which have a forward starting effective date of October 31, 2023 and expire on October 31, 2025, provide us with interest rate protection in the event the one-month LIBOR rate increases above 2.5%. Interest rate cap agreements for $300 million, which have a forward starting effective date of October 31, 2023 and expire on October 31, 2026, provide us with interest rate protection in the event the one-month LIBOR rate increases above 3.0%.
At December 31, 2021, we had borrowings outstanding of $1.0 billion under our term loan facilities, which were subject to a weighted average interest rate of 2.98% during the year then ended, including the impact of the interest rate swap agreements prior to their maturity.
Based on the borrowings outstanding under the senior secured credit facilities during 2021, we estimate that had the average interest rate on our borrowings increased by 100 basis points in 2021, our interest expense for the year would have increased by approximately $2.2 million, including the impact of the interest rate hedge agreements prior to their maturity.
These estimates assume the interest rate of each variable rate borrowing is raised by 100 basis points. The impact on future interest expense as a result of future changes in interest rates will depend largely on the gross amount of our borrowings subject to variable interest rates at that time. Therefore, the estimated increase in interest expense as calculated above may not be indicative of future expenses. As of December 31, 2021, the fair value of our interest rate cap agreements was an asset of $8.8 million.
During the year ended December 31, 2021, our wholly-owned captive insurance entity purchased and sold marketable debt securities, which were classified as available-for-sale. As of December 31, 2021, the fair value of the available-for-sale debt securities was $29.9 million. Our investments in debt securities primarily consist of U.S. Treasury and U.S. government agency securities that carry a fixed coupon rate, as well as certificate of deposits, and treasury bills with maturities greater than three months. As of December 31, 2021, a hypothetical increase in interest rates of 100 basis points would not have a material adverse impact on the fair value of our investment portfolio. Any unrealized gains or losses are recorded in accumulated other comprehensive loss and are realized if the debt securities are sold prior to maturity.
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We may enter into additional derivatives or other market risk sensitive instruments in the future for the purpose of hedging or for trading purposes. Refer to Note 11, Credit Arrangements and Debt Obligations, to the consolidated financial statements in Item 8 of this Annual Report on Form 10-K for additional information on derivative financial instruments.
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