On April 19, 2024, we entered into Amendment No. 14 to Syndicated Facility Agreement, pursuant to which we obtained a new $1,500,000,000 revolving credit facility (the “New Revolving Credit Facility”), a new $750,000,000 term loan A facility (the “New Term A Facility” and, together with the New Revolving Credit Facility, the “New Pro Rata Facilities”) and a new $700,000,000 term loan B facility (the “New Term B Facility” and, together with the New Pro Rata Facilities, the “New Credit Facilities”). The New Revolving Credit Facility and the New Term A Facility mature on April 19, 2029. The New Term B Facility matures on April 19, 2031. The New Term A Facility and the New Term B Facility were borrowed in full on April 19, 2024 in U.S. dollars. Loans under the New Revolving Credit Facility may be borrowed, and letters of credit thereunder may be issued, in U.S. dollars or in certain foreign currencies. The New Credit Facilities replace in full the Original Revolving Credit Facility, the Original Term A Facility and the Original Term B Facility, and borrowings under the New Credit Facilities were used to refinance in full the Original Credit Facilities and for general corporate purposes. The Credit Agreement permits us to designate certain of our subsidiaries as additional co-borrowers from time to time. Currently, there are no co-borrowers under the New Credit Facilities.
Borrowings under (a) the New Revolving Credit Facility (in U.S. dollars) and the New Term A Facility will bear interest at a rate per annum equal to, at our option, (i) a Term SOFR rate (with a 0% floor and SOFR adjustment of 0.10%) or (ii) a base rate (with a 0% floor), in each case, plus an applicable margin of 1.25% in the case of the Term SOFR rate and 0.25% in the case of the base rate, and (b) the New Revolving Credit Facility in currencies other U.S. dollars will bear interest at a rate per annum equal to the applicable reference rate for such currency (including any related adjustments), plus an applicable margin of 1.25%. The applicable margin is subject, in each case, to adjustment based on our consolidated leverage ratio from time to time.
Borrowings under the New Term B Facility will bear interest at a rate per annum equal to, at our option, (a) a Term SOFR rate (with a 0% floor and a SOFR adjustment of 0%) or (b) a base rate (with a 0% floor), in each case, plus an applicable margin of 1.875% in the case of the Term SOFR rate and 0.875% in the case of the base rate.
Certain of our material subsidiaries (the “Guarantors”) have guaranteed our obligations of the borrowers under the Credit Agreement, subject to certain exceptions. The borrowers’ obligations under the Credit Agreement are secured by a lien on substantially all of our assets and the Guarantors’ assets, subject to certain exceptions.
The Credit Agreement contains customary negative covenants that include, among other things, limitations on our ability and certain of our subsidiaries, subject to certain exceptions, to incur liens and debt, make investments, dispositions, and restricted payments, change the nature of their business, consummate mergers, consolidations and the sale of all or substantially all of our respective assets and transact with affiliates. We are also required to maintain a consolidated leverage ratio of less than or equal to 4.00 to 1.00 (subject to certain adjustments in connection with permitted acquisitions), tested on a quarterly basis (the “Financial Covenants”). The Financial Covenants do not apply to the New Term B Facility. As of March 31, 2024, we were in compliance with the covenants of the Credit Agreement.
The Credit Agreement contains customary affirmative covenants, including, among other things, compliance with applicable law, preservation of existence, maintenance of properties and of insurance, and keeping proper books and records. The Credit Agreement contains customary events of default, including, among other things, nonpayment of principal, interest or fees, cross-defaults to other debt, inaccuracies of representations and warranties, failure to perform covenants, events of bankruptcy and insolvency, change of control and unsatisfied judgments, subject in certain cases to notice and cure periods and other exceptions.
At March 31, 2024 and September 30, 2023, letters of credit totaled $4.4 million and $4.4 million, respectively, under the our Original Revolving Credit Facility. As of March 31, 2024 and September 30, 2023, we had $1,145.6 million and $1,145.6 million, respectively, available under our Original Revolving Credit Facility.
2027 Senior Notes
On February 21, 2017, we completed a private placement offering of $1,000,000,000 aggregate principal amount of our unsecured 5.125% Senior Notes due 2027 (the “2027 Senior Notes”). On June 30, 2017, we completed an exchange offer to exchange the unregistered 2027 Senior Notes for registered notes, as well as related guarantees.
As of March 31, 2024, the estimated fair value of the 2027 Senior Notes was approximately $977.3 million. The fair value of the 2027 Senior Notes as of March 31, 2024 was derived by taking the mid-point of the trading prices from an observable market input (Level 2) in the secondary bond market and multiplying it by the outstanding balance of the 2027 Senior Notes. Interest is payable on the 2027 Senior Notes at a rate of 5.125% per annum. Interest on the 2027 Senior Notes is payable semi-annually on March 15 and September 15 of each year, commencing on September 15, 2017. The 2027 Senior Notes will mature on March 15, 2027.