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Debt
3 Months Ended
Sep. 30, 2026
Debt Disclosure [Abstract]  
Debt Debt
On November 20, 2025, the Company completed its offering and sale of $700.0 million in aggregate principal amount of 5.625% Senior Notes due 2034 (the "2034 Notes"). The 2034 Notes accrue interest at the rate of 5.625% per annum, with interest payable in cash semi-annually in arrears on March 1 and September 1, commencing March 1, 2026. The 2034 Notes will mature on March 1, 2034. The 2034 Notes are senior indebtedness of the Company, ranking equally in right of payment with all its existing and future senior indebtedness and senior to any future subordinated indebtedness. The Company used the net proceeds from the issuance of the 2034 Notes to repay, in November 2025, $400.0 million and $300.0 million in aggregate principal amount of its senior unsecured Notes due July 2028 and March 2030, respectively, including any interest and premium due thereon, thereby redeeming such notes in full.

On November 20, 2025, the Company entered into a Third Amended and Restated Credit Agreement with Bank of America, N.A., as administrative agent, swing line lender and letter of credit issuer and the other lenders, agents and arrangers party thereto (the "Credit Facility"). The Credit Facility amended and restated the Company's then existing Second Amended and Restated Credit Agreement dated as of April 14, 2023, which had been set to expire on April 12, 2028. The third amendment and restatement of the Credit Facility extended the maturity to November 20, 2030.

The Credit Facility is an unsecured revolving credit facility with a commitment of $500.0 million subject to the right, from time to time, to request an increase of the commitment not in excess of $650.0 million and provides for the issuance of letters of credit subject to a $40.0 million sub-limit. The Company has the right to voluntarily prepay and re-borrow loans, to terminate or reduce the commitments under the Credit Facility, and, subject to certain lender approvals, to join subsidiaries as subsidiary borrowers. As of September 30, 2026, the Company had $0.9 million of issued letters of credit under the Credit Facility and no short-term borrowings. The balance of $499.1 million remains available to the Company.

Interest on the borrowings under the Credit Facility accrues at variable rates which are determined based upon the Company's consolidated total leverage ratio. The applicable margin to be added to Alternative Currency Daily Rate, Alternative Currency Term Rate and Term SOFR determined loans ranges from 1.375% to 2.150% (1.625% as of September 30, 2026), and for Base Rate-determined loans, from 0.500% to 1.250% (0.750% as of September 30, 2026). The Company also pays a quarterly commitment fee ranging from 0.200% to 0.300% (0.225% as of September 30, 2026), determined based upon the consolidated total leverage ratio, of the unused portion of the commitment under the Credit Facility. In addition, the Company must pay certain letter of credit fees, ranging from 1.375% to 2.150% (1.625% as of September 30, 2026), with respect to letters of credit issued under the Credit Facility. As of September 30, 2026, the borrowing rate for the Credit Facility was 5.638%, however, the Company had no short-term borrowings.
The Company is subject to certain financial and restrictive covenants under the Credit Facility, which require the maintenance of a minimum interest coverage ratio of 3.00 to 1.00 and a consolidated net leverage ratio of no more than 3.50 to 1.00. The restrictions of these covenants (other than the financial ratio covenants) are subject to certain exceptions or threshold triggering amounts or events specified in the Credit Facility, and in some cases the restrictions may be waived by the lenders. As of September 30, 2026, the Company was in compliance with all of the covenants of the Credit Facility.

Long-term debt outstanding as of September 30, 2026 and June 30, 2026 consisted of the following:
($ in millions)September 30,
2026
June 30,
2026
Senior unsecured notes, 5.625% due March 2034 (face value of $700.0 million at September 30, 2026)
691.0 690.7 
Total debt691.0 690.7 
Less: amounts due within one year— — 
Long-term debt, net of current portion$691.0 $690.7 

For the three months ended September 30, 2026 and 2025, interest costs totaled $10.6 million and $12.7 million, respectively, of which $3.5 million and $1.2 million, respectively, were capitalized as part of the cost of property, plant, equipment and software. The decrease in interest expense, net in the three months ended September 30, 2026, as compared to the three months ended September 30, 2025, is due to higher capitalized interest and a lower interest rate on the 2034 Notes as compared to the notes that were prepaid and redeemed in full in November 2025.