The carrying value of our cash and cash equivalents approximates fair value because of their short-term nature and is classified as Level 1.
Adtalem maintains a rabbi trust with investments in stock and bond mutual funds to fund obligations under a nonqualified deferred compensation plan. The fair value of the investments in the rabbi trust of $21.6 million, $20.6 million, and $10.5 million as of December 31, 2021, June 30, 2021, and December 31, 2020, respectively, were included on the Consolidated Balance Sheets within prepaid expenses and other current assets. These investments are recorded at fair value based upon quoted market prices using Level 1 inputs.
The fair value of the credit extension programs, which approximates its carrying value, included in accounts receivable, net and other assets, net on the Consolidated Balance Sheets as of December 31, 2021, June 30, 2021, and December 31, 2020 of $29.1 million, $29.2 million, and $30.6 million, respectively, is estimated by discounting the future cash flows using current rates for similar arrangements and is classified as Level 2. See Note 9 “Accounts Receivable and Credit Losses” for additional information on these credit extension programs.
In connection with the sale of DeVry University, Adtalem loaned $10.0 million to DeVry University under the terms of the DeVry Note. The DeVry Note bears interest at a rate of 4% per annum, payable annually in arrears, and had a maturity date of January 1, 2022. The fair value of the DeVry University loan receivable approximates its carrying value of $10.0 million for each reporting date. The carrying value is included on the Consolidated Balance Sheets in prepaid expenses and other current assets as of each of December 31, 2021 and June 30, 2021, and in other assets, net as of December 31, 2020. Fair value is estimated by discounting the future cash flows using an average of current rates for similar arrangements, which is estimated at 4% per annum and is classified as Level 2.
On July 31, 2019, Adtalem sold its Chicago, Illinois, campus facility to DePaul College Prep. In connection with the sale, Adtalem holds a mortgage from DePaul College Prep for $46.8 million. The mortgage is due on July 31, 2024 as a balloon payment and bears interest at a rate of 4% per annum, payable monthly. The carrying value of the DePaul College Prep loan receivable, which approximates its fair value, included in other assets, net on the Consolidated Balance Sheets as of December 31, 2021, June 30, 2021, and December 31, 2020 is $43.3 million, $42.7 million, and $42.0 million, respectively. Fair value is estimated by discounting the future cash flows using an average of current rates for similar arrangements, which is estimated at 7% per annum and is classified as Level 2.
Adtalem has a nonqualified deferred compensation plan for highly compensated employees and its Board members. The participant’s “investments” are in a hypothetical portfolio of investments which are tracked by an administrator. Changes in the fair value of the nonqualified deferred compensation obligation are derived using quoted prices in active markets based on the market price per unit multiplied by the number of units. Total liabilities under the plan as of December 31, 2021, June 30, 2021, and December 31, 2020, were $21.4 million, $20.3 million, and $19.3 million, respectively, and are included in accrued liabilities on the Consolidated Balance Sheets. The fair value of the nonqualified deferred compensation obligation is classified as Level 2 because their inputs are derived principally from observable market data by correlation to the hypothetical investments.
As of December 31, 2021, June 30, 2021, and December 31, 2020, borrowings under our long-term debt agreements were $1,650.0 million, $1,091.0 million, and $292.5 million, respectively. The carrying value of our long-term debt approximates fair value because the interest rates on these borrowings approximated the effective interest rate and is classified as Level 2. See Note 13 “Debt” for additional information on our long-term debt agreements.
On March 24, 2020, we executed a pay-fixed, receive-variable interest rate swap agreement with a multinational financial institution to fully mitigate risks associated with the variable interest rate on our Prior Term Loan B debt with an effective date of March 31, 2020. The fair value of our Swap was based in part on data received from the counterparty, and represented the estimated amount we would receive or pay to settle the Swap, taking into consideration current and projected future interest rates as well as the creditworthiness of the counterparty, all of which can be validated through readily observable data from external sources, in which case the measurements are classified within Level 2. The fair value of the Swap is represented within other liabilities on the Consolidated Balance Sheets with a balance of $8.9 million and $9.6 million as of June 30, 2021 and December 31, 2020, respectively. On July 29, 2021, prior to refinancing our Prior Credit Agreement, we settled and terminated the Swap for $4.5 million, which resulted in a charge to interest expense in the six months ended December 31, 2021. See Note 13 “Debt” for additional information on the Swap.