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Debt
 9 Months Ended
Jun. 30, 2025
Debt Disclosure [Abstract]  
Debt Debt
Debt consisted of the following:
June 30,
2025		September 30,
2024
(in millions)
Credit Agreement$1,441.6 $1,446.6 
2027 Senior Notes997.3 997.3 
Other debt109.3 95.9 
Total debt2,548.2 2,539.8 
Less: Current portion of debt and short-term borrowings(73.2)(66.9)
Less: Unamortized debt issuance costs(19.1)(22.6)
Long-term debt$2,455.9 $2,450.3 
The following table presents, in millions, scheduled maturities of the Company’s debt as of June 30, 2025:
Fiscal Year
2025 (three months remaining)$22.5 
202659.4 
20271,025.7 
202819.0 
2029758.7 
Thereafter662.9 
Total$2,548.2 
Credit Agreement
On April 19, 2024, the Company entered into Amendment No. 14 to Syndicated Facility Agreement (as amended, modified or otherwise supplemented, the "Credit Agreement"), pursuant to which the Company 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 Company's existing revolving credit facility, term loan A facility and term loan B facility, and borrowings under the New Credit Facilities were used to refinance in full the Company's existing credit facilities and for general corporate purposes. The Credit Agreement permits the Company to designate certain of its subsidiaries as additional co-borrowers from time to time. Currently, there are no co-borrowers under the New Credit Facilities. On October 29, 2024, the Company entered into Amendment No. 15 to Syndicated Facility Agreement, pursuant to which the Company reduced the interest rate spread applicable to its New Term B Facility.
Borrowings under (a) the New Revolving Credit Facility (in U.S. dollars) and the New Term A Facility bear interest at a rate per annum equal to, at the Company’s 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 1.225% in the case of the Term SOFR rate and 0.225% in the case of the base rate, and (b) the New Revolving Credit Facility in currencies other than U.S. dollars 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 1.225%. The applicable margin is subject, in each case, to adjustment based on the Company’s consolidated leverage ratio from time to time.
Borrowings under the New Term B Facility, after giving effect to Amendment No. 15 to Syndicated Facility Agreement, bear interest at a rate per annum equal to, at the Company’s 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 1.75% in the case of the Term SOFR rate and 0.75% in the case of the base rate.
Certain of the Company’s material subsidiaries (the “Guarantors”) have guaranteed the Company’s 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 the Company’s assets and its Guarantors’ assets, subject to certain exceptions.
The Credit Agreement contains customary negative covenants that include, among other things, limitations on the ability of the Company and certain of its 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 their respective assets and transact with affiliates. The Company is 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 Covenant”). The Financial Covenant does not apply to the New Term B Facility. As of June 30, 2025, the Company was 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 June 30, 2025 and September 30, 2024, letters of credit totaled $4.4 million and $4.4 million, respectively, under the Company’s New Revolving Credit Facility. As of June 30, 2025 and September 30, 2024, the Company had $1,495.6 million and $1,495.6 million, respectively, available under its New Revolving Credit Facility.
2027 Senior Notes
On February 21, 2017, the Company completed a private placement offering of $1,000,000,000 aggregate principal amount of its unsecured 5.125% Senior Notes due 2027 (the “2027 Senior Notes”). On June 30, 2017, the Company completed an exchange offer to exchange the unregistered 2027 Senior Notes for registered notes, as well as related guarantees.
As of June 30, 2025, the estimated fair value of the 2027 Senior Notes was approximately $993.6 million. The fair value of the 2027 Senior Notes as of June 30, 2025 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 was payable on the 2027 Senior Notes at a rate of 5.125% per annum. Interest on the 2027 Senior Notes was payable semi-annually on March 15 and September 15 of each year, commencing on September 15, 2017. The 2027 Senior Notes were set to mature on March 15, 2027.
At any time and from time to time prior to December 15, 2026, the Company may redeem all or part of the 2027 Senior Notes, at a redemption price equal to 100% of their principal amount, plus a “make whole” premium as of the redemption date, and accrued and unpaid interest to the redemption date.
The indenture pursuant to which the 2027 Senior Notes were issued contained customary events of default, including, among other things, payment default, exchange default, failure to provide notices thereunder and provisions related to bankruptcy events. The indenture also contained customary negative covenants.
The Company was in compliance with the covenants relating to the 2027 Senior Notes as of June 30, 2025.
Other Debt and Other Items
Other debt consists primarily of obligations under capital leases and loans, and unsecured credit facilities. The Company’s unsecured credit facilities are primarily used for standby letters of credit issued in connection with general and professional liability insurance programs and for contract performance guarantees. At June 30, 2025 and September 30, 2024, these outstanding standby letters of credit totaled $895.2 million and $934.5 million, respectively. As of June 30, 2025, the Company had $376.7 million available under these unsecured credit facilities.
Effective Interest Rate
The Company’s average effective interest rate on its total debt, including the effects of the interest rate swap and interest rate cap agreements, during the nine months ended June 30, 2025 and 2024 was 5.1% and 5.5%, respectively.
Interest expense in the consolidated statements of operations included amortization of deferred debt issuance costs for the three and nine months ended June 30, 2025 of $1.2 million and $3.9 million, respectively, and for the three and nine months ended June 30, 2024 of $4.0 million and $6.4 million, respectively.
Subsequent Events
2033 Senior Notes

On July 22, 2025, the Company completed an offering of $1,200,000,000 aggregate principal amount of its 6.000% Senior Notes due 2033 (the “2033 Senior Notes”).

Interest will be payable on the 2033 Senior Notes at a rate of 6.000% per annum. Interest on the 2033 Senior Notes will be payable semi-annually in arrears on February 1 and August 1 of each year, commencing on February 1, 2026. The 2033 Senior Notes will mature on August 1, 2033.

Prior to August 1, 2028, the Company may redeem all or part of the 2033 Senior Notes at a redemption price equal to 100% of the principal amount to be redeemed, plus a “make whole” premium as of the redemption date, and accrued and unpaid interest to, but excluding, the redemption date. In addition, prior to August 1, 2028, the Company may redeem up to 40% of the aggregate principal amount of the 2033 Senior Notes with proceeds from certain equity offerings at a redemption price equal to 106% of the principal amount to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. Furthermore, at any time on or after August 1, 2028, the Company may redeem on one or more occasions all or part of the 2033 Senior Notes at the redemption prices set forth below, plus accrued and unpaid interest thereon to, but excluding, the redemption date, if redeemed during the 12-month period beginning on August 1 of each of the years indicated below:

Percentage
2028 ................................................................................................................... 103.000%
2029 ................................................................................................................... 101.500%
2030 and thereafter ................................................................................................ 100.000%
The indenture pursuant to which the 2033 Senior Notes were issued contains customary events of default, including, among other things, payment default, failure to provide certain notices thereunder and certain provisions related to bankruptcy events. The indenture also contains customary negative covenants.

2027 Senior Notes
On July 22, 2025, the Company used a portion of the net proceeds of the offering of the 2033 Senior Notes to purchase $732,914,000 in principal amount of the 2027 Senior Notes that were validly tendered and not validly withdrawn at or prior to the July 21, 2025 expiration date of its previously announced tender offer for the 2027 Senior Notes. The purchase included a "make whole" payment of $6.4 million.
In addition, the Company also issued a redemption notice to noteholders to redeem on August 14, 2025 the remaining 2027 Senior Notes that are outstanding and not tendered in the tender offer. The redemption is expected to include a "make whole" payment of $2.3 million.