Facility can be extended for two additional six-month periods to June 30, 2028, at our sole option, subject to satisfying certain customary conditions precedent.
Borrowings under the Credit Facility bear interest, at our election, at either (i) (x) for Term Benchmark Loans, the Adjusted Term SOFR Rate, the applicable Local Rate, the Adjusted EURIBOR Rate, or the Adjusted TIBOR Rate, (y) for RFR Loans, if denominated in Sterling, SONIA plus a benchmark adjustment and if denominated in Dollars, Daily Simple SOFR plus a benchmark adjustment, or (z) for Daily SOFR Loans, the Adjusted Floating Overnight Daily SOFR Rate, in each case of clauses (x) through (z) above, plus a margin determined by our corporate credit rating of between 0.650% and 1.400% or (ii) for loans denominated in U.S. Dollars only, the base rate (which rate is equal to the greatest of the prime rate, the federal funds effective rate plus 0.500% or Adjusted Term SOFR Rate for one month plus 1.000%) (the “Base Rate”), plus a margin determined by our corporate credit rating of between 0.000% and 0.400%. The Credit Facility includes a facility fee determined by our corporate credit rating of between 0.100% and 0.300% on the aggregate revolving commitments under the Credit Facility. Based upon our current credit ratings, the interest rate on the Credit Facility is SOFR plus 72.5 basis points, plus a spread adjustment to account for the transition from LIBOR to SOFR.
On September 19, 2024, we amended and extended the Supplemental Facility which may be increased to $4.5 billion during its term and provides for borrowings denominated in U.S. dollars, Euro, Yen, Pounds Sterling, Canadian dollars and Australian dollars. Borrowings in currencies other than the U.S. dollar are limited to 100% of the maximum revolving credit amount, as defined. The initial maturity date of the Supplemental Facility was extended to January 31, 2029 and can be extended for an additional year to January 31, 2030 at our sole option, subject to the Company’s continued compliance with the terms thereof.
Borrowings under the Supplemental Facility bear interest, at the Company’s election, at either (i) (x) for Term Benchmark Loans, the Adjusted Term SOFR Rate, the applicable Local Rate, the Adjusted EURIBOR Rate, the Adjusted Term CORRA Rate, or the Adjusted TIBOR Rate, (y) for RFR Loans, if denominated in Sterling, SONIA plus a benchmark adjustment, if denominated in Dollars, Daily Simple SOFR plus a benchmark adjustment, and if denominated in Canadian Dollars, Daily Simple CORRA plus a benchmark adjustment or (z) for Daily SOFR Loans, the Adjusted Floating Overnight Daily SOFR Rate, in each case of clauses (x) through (z) above, plus a margin determined by the Company’s corporate credit rating of between 0.650% and 1.400% or (ii) for loans denominated in U.S. Dollars only, the base rate (which rate is equal to the greatest of the prime rate, the NYFRB Rate plus 0.500% or Adjusted Term SOFR Rate for one month plus 1.000%) (the “Base Rate”), plus a margin determined by the Company’s corporate credit rating of between 0.000% and 0.400%. The Supplemental Facility includes a facility fee determined by the Company’s corporate credit rating of between 0.100% and 0.300% on the aggregate revolving commitments under the Supplemental Facility. Based upon our current credit ratings, the interest rate on the Supplemental Facility is SOFR plus 72.5 basis points, plus a spread adjustment to account for the transition from LIBOR to SOFR.
At September 30, 2024, we had an aggregate available borrowing capacity of $8.1 billion under the Credit Facilities. The maximum aggregate outstanding balance under the Credit Facilities, during the nine months ended September 30, 2024 was $325.1 million and the weighted average outstanding balance was $306.3 million. Letters of credit of $58.6 million were outstanding under the Credit Facilities as of September 30, 2024.
The Operating Partnership also has available a Commercial Paper program. The Operating Partnership may issue unsecured commercial paper notes, denominated in U.S. dollars, Euro and other currencies. Notes issued in non-U.S. currencies may be issued by one or more subsidiaries of the Operating Partnership and are guaranteed by the Operating Partnership. Notes are sold under customary terms in the U.S. and Euro commercial paper note markets and rank (either by themselves or as a result of the guarantee described above) pari passu with the Operating Partnership’s other unsecured senior indebtedness. The Commercial Paper program is supported by the Credit Facilities and, if necessary or appropriate, we may make one or more draws under either of the Credit Facilities to pay amounts outstanding from time to time on the Commercial Paper program. On September 30, 2024, we had no outstanding balance under the Commercial Paper program. Borrowings reduce amounts otherwise available under the Credit Facilities.
On September 26, 2024, the Operating Partnership completed the issuance of $1.0 billion of senior unsecured notes with a fixed interest rate of 4.75% with a maturity date of September 26, 2034.
On September 13, 2024, the Operating Partnership completed the redemption, at par, of its $1.0 billion 2.00% senior unsecured notes at maturity.
On February 1, 2024, the Operating Partnership completed the redemption, at par, of its $600 million 3.75% senior unsecured notes at maturity.
On November 14, 2023, the Operating Partnership completed the issuance of €750.0 million senior unsecured bonds ($808.0 million U.S. dollar equivalent) with a maturity date of November 14, 2026 and a fixed interest rate of 3.50%. The bonds are exchangeable into shares of Klépierre at the option of the holder of the bond at an initial common price of €27.2092. We may elect to settle the exchange with cash instead of shares. The proceeds were used to repay €750.0 million ($815.4 million U.S.