Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 7A. Quantitative and Qualitative Disclosures about Market Risk
We are exposed to certain risks arising from both our business operations and overall economic conditions. Our market risks include interest rate risk and fuel price risk. We do not enter into derivatives or other financial instruments for trading or speculative purposes.
Interest Rate Risk
Our debt exposes us to risk of fluctuations in interest rates. Floating rate debt, where the interest rate fluctuates periodically, exposes us to short-term changes in market interest rates. Fixed rate debt, where the interest rate is fixed over the life of the instrument, exposes us to changes in market interest rates reflected in the fair value of the debt and to the risk that we may need to refinance maturing debt with new debt at higher rates. We manage our debt portfolio to achieve an overall desired position of fixed and floating rates and may employ interest rate swaps as a tool to achieve that position. We have in the past entered into interest rate swap agreements to limit our exposure to variable interest rate terms on certain borrowings under our Initial Term Loan Facility, however, our remaining interest rate swap agreements expired on July 31, 2021.
Approximately 47% of the principal amount of our debt bore interest at floating rates based on LIBOR or an alternative base rate, as defined in our credit agreements, as of January 1, 2022 . A hypothetical 1% change in the applicable rate would cause the interest expense on our floating rate debt to change by approximately $24 million per year (see Note 11, Debt, in our consolidated financial statements). On March 5, 2021, the IBA, the administrator of LIBOR, announced that it will cease publication of U.S. dollar LIBOR tenors as of June 30, 2023 (instead of December 31, 2021), for the most common tenors (overnight and one, three, six and twelve months) and it will cease publication of U.S. dollar LIBOR tenors for less common tenors (one week and two months) as well as all tenors of non-U.S. dollar LIBOR as of December 31, 2021. We are unable to predict the impact of using alternative reference rates and corresponding rate risk as of this time.
Fuel Price Risk
We are also exposed to risk due to fluctuations in the price and availability of diesel fuel. We require significant quantities of diesel fuel for our vehicle fleet, and the price and supply of diesel fuel are unpredictable and fluctuate based on events outside our control, including geopolitical developments, supply and demand for oil and gas, regional production patterns, weather conditions and environmental concerns. Increases in the cost of diesel fuel can negatively affect consumer confidence and discretionary spending and increase the prices we pay for products, and the costs we incur to deliver products to our customers.
Our activities to minimize fuel cost risk include route optimization, improving fleet utilization and assessing fuel surcharges. We also enter into forward purchase commitments for a portion of our projected diesel fuel requirements. As of January 1, 2022, we had diesel fuel forward purchase commitments totaling $33 million, which fix approximately 19% of our projected diesel fuel purchase needs through March 2023. Our remaining fuel purchase needs will occur at market rates unless contracted for a fixed price or hedged at a later date. Using current published market price projections for diesel and estimated fuel consumption needs, a hypothetical 10% unfavorable change in diesel prices from the market price could result in approximately $17 million in additional fuel cost on uncommitted volumes through March 2023.
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