Item 3. Quantitative and Qualitative Disclosures About Market Risk

Information on our utilization of financial instruments and an analysis of the sensitivity of these instruments to selected changes in market rates and prices is included in our 2021 Form 10-K.

Our net financial instrument position decreased from a liability of $7,850.3 at 30 September 2021 to a liability of $7,463.8 at 31 December 2021. The decrease was primarily due to the repayment of a $400.0 million U.S. Dollar-denominated note on its maturity date in November 2021.

Interest Rate Risk

The sensitivity analysis related to the interest rate risk on the fixed portion of our debt portfolio assumes an instantaneous 100 bp move in interest rates from the level at 31 December 2021, with all other variables held constant. A 100 bp increase in market interest rates would result in a decrease of $569 and $587 in the net liability position of financial instruments at 31 December 2021 and 30 September 2021, respectively. A 100 bp decrease in market interest rates would result in an increase of $673 and $692 in the net liability position of financial instruments at 31 December 2021 and 30 September 2021.

There were no material changes to the sensitivity analysis related to the variable portion of our debt portfolio since 30 September 2021.

There were no material changes to the sensitivity analysis related to the foreign currency exchange rate risk on our financial instruments portfolio since 30 September 2021.