v3.26.1
Debt
 3 Months Ended
Jun. 30, 2026
Debt Disclosure [Abstract]  
Debt Debt
Debt obligations included in the condensed consolidated balance sheets consisted of the following (in millions)(1):
Coupon Interest RateEffective Interest Rate
June 30,March 31,
20262026
Commercial Paper$211.0 $349.0 
4.900% 2028 Notes4.900%5.1%1,000.0 1,000.0 
5.050% 2029 Notes5.050%5.2%1,000.0 1,000.0 
5.050% 2030 Notes5.050%5.2%1,000.0 1,000.0 
Total Senior Indebtedness(2)
3,211.0 3,349.0 
2017 Senior Convertible Debt1.625%1.8%37.9 37.9 
2024 Senior Convertible Debt0.750%1.0%1,250.0 1,250.0 
2026 Senior Convertible Debt0.000%0.5%900.0 900.0 
Total Convertible Debt2,187.9 2,187.9 
Gross long-term debt including current maturities5,398.9 5,536.9 
Less: Debt discount(3)
(8.4)(9.3)
Less: Debt issuance costs(4)
(29.2)(31.2)
Net long-term debt including current maturities5,361.3 5,496.4 
Less: Current maturities(5)
— — 
Net long-term debt$5,361.3 $5,496.4 
(1) The Company had no outstanding borrowings under the Revolving Credit Facility at June 30, 2026 and at March 31, 2026.
(2) All outstanding Senior Notes and the Revolving Credit Facility are senior unsecured debt.
(3) The unamortized discount consists of the following (in millions):
June 30,March 31,
20262026
Commercial Paper$(0.4)$(0.5)
4.900% 2028 Notes(1.9)(2.2)
5.050% 2029 Notes(3.0)(3.3)
5.050% 2030 Notes(3.1)(3.3)
Total unamortized discount$(8.4)$(9.3)

(4) Debt issuance costs consist of the following (in millions):
June 30,March 31,
20262026
4.900% 2028 Notes(1.0)(1.1)
5.050% 2029 Notes(1.2)(1.2)
5.050% 2030 Notes(1.3)(1.4)
2024 Senior Convertible Debt(10.7)(11.4)
2026 Senior Convertible Debt(15.0)(16.1)
Total debt issuance costs$(29.2)$(31.2)

(5) As of June 30, 2026, the outstanding Commercial Paper which matures within the three months ending September 30, 2026, and the 2017 Senior Convertible Debt which is convertible and which matures on February 15, 2027, were excluded from current maturities as the Company has the intent and ability to utilize proceeds from its Revolving Credit Facility to refinance such notes and settle the principal portion of its Convertible Debt upon conversion on a long-term basis. As of March 31, 2026, the outstanding Commercial Paper which matured within the three months ending June 30, 2026, and the 2017 Senior Convertible Debt which was convertible and which matures on February 15, 2027, were excluded from current maturities as the Company had the intent and ability to utilize proceeds from its Revolving Credit Facility to refinance such notes and settle the principal portion of its Convertible Debt upon conversion on a long-term basis.

Expected maturities relating to the Company’s debt obligations based on the contractual maturity dates as of June 30, 2026, are as follows (in millions):

Fiscal year ending March 31,Amount
2027$248.9 
20281,000.0 
20291,000.0 
20301,900.0 
20311,250.0 
Thereafter— 
Total$5,398.9 

Ranking of Convertible Debt - Each series of Convertible Debt is an unsecured obligation. The 2017 Senior Convertible Debt is subordinated in right of payment to the amounts outstanding under the Company's Senior Indebtedness, the 2024 Senior Convertible Debt and the 2026 Senior Convertible Debt. The 2024 Senior Convertible Debt and the 2026 Senior Convertible Debt ranks senior to the Company's indebtedness that is expressly subordinated in right of payment to it; ranks equal in right of payment to any of the Company's unsubordinated indebtedness that does not provide that it is senior to the 2024 Senior Convertible Debt and the 2026 Senior Convertible Debt; and the Convertible Debt ranks junior in right of payment to any of the Company's secured and unsubordinated indebtedness to the extent of the value of the assets securing such indebtedness; and is structurally subordinated to all indebtedness and other liabilities of the Company's subsidiaries.

Summary of Conversion Features - Upon conversion, we are required to satisfy our conversion obligation with respect to such converted Convertible Debt by delivering cash equal to the principal amount of such converted Convertible Debt and cash and shares of common stock or any combination, at our option, with respect to any conversion value in excess thereof. Each series of Convertible Debt is convertible at specified conversion rates (see table below), adjusted for certain events including the declaration of cash dividends. Except during the three-month period immediately preceding the maturity date
of the applicable series of Convertible Debt, each series of Convertible Debt is convertible only upon the occurrence of (i) such time as the closing price of the Company's common stock exceeds the applicable conversion price (see table below) by 130% for 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding fiscal quarter, (ii) during the 5 business day period after any 10 consecutive trading day period, or the measurement period, in which the trading price per $1,000 principal amount of notes of a given series for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company's common stock and the applicable conversion rate on each such trading day, or (iii) upon the occurrence of certain corporate events specified in the indenture of such series of Convertible Debt. In addition, if at the time of conversion our 2017 Senior Convertible Notes, the price of the Company's common stock exceeds the conversion price for such notes, the conversion rate will be increased by up to an additional maximum incremental shares rate, as determined pursuant to a formula specified in the indenture for the 2017 Senior Convertible Notes, and as adjusted for cash dividends paid since the issuance of such series. However, in no event will the conversion rate for the 2017 Senior Convertible Notes exceed the maximum conversion rate specified in the indenture (see table below).

The following table sets forth the applicable conversion rates adjusted for dividends declared since issuance of such series of Convertible Debt and the applicable incremental share factors and maximum conversion rates as adjusted for dividends paid since the applicable issuance date:
Dividend adjusted rates as of June 30, 2026
Conversion RateApproximate Conversion PriceIncremental Share FactorMaximum Conversion Rate
2017 Senior Convertible Debt(1)
23.6261 $42.33 11.8140 33.6672 
2024 Senior Convertible Debt(1)
8.2105 $121.80 — 10.4682 
2026 Senior Convertible Debt(1)
9.5993 $104.17 — 13.4390 
(1) As of June 30, 2026, the 2024 Senior Convertible Debt and the 2026 Senior Convertible Debt were not convertible. As of June 30, 2026, the holders of the 2017 Senior Convertible Debt have the right to convert their notes between July 1, 2026 and September 30, 2026 because the Company's common stock price has exceeded the applicable conversion price for such series by 130% for the specified period of time during the quarter ended June 30, 2026.

With the exception of the 2024 Senior Convertible Debt, which may be redeemed by the Company on or after June 5, 2027, and the 2026 Senior Convertible Debt, which may be redeemed by the Company on or after February 20, 2029, the Company may not redeem any series of Convertible Debt prior to the relevant maturity date and no sinking fund is provided for any series of Convertible Debt. The Company may repurchase any series of Convertible Debt in the open market or through privately negotiated exchange offers. Upon the occurrence of a fundamental change, as defined in the applicable indenture of such series of Convertible Debt, holders of such series may require the Company to purchase all or a portion of their Convertible Debt for cash at a price equal to 100% of the principal amount plus any accrued and unpaid interest.

Additionally, holders of the 2024 Senior Convertible Debt may require the Company to purchase all or a portion of their 2024 Senior Convertible Debt for cash at a price equal to 100% of the principal amount plus any accrued and unpaid interest if, prior to the close of business on the immediately preceding business day immediately preceding June 1, 2027, the last reported sale price of our common stock is less than the applicable conversion price of the 2024 Senior Convertible Debt. The holders of the 2026 Senior Convertible Debt may require the Company to purchase all or a portion of their 2026 Senior Convertible Debt for cash at a price equal to 100% of the principal amount plus any accrued and unpaid interest if, prior to the close of business on the immediately preceding business day immediately preceding February 15, 2029, the last reported sale price of our common stock is less than the applicable conversion price of the 2026 Senior Convertible Debt.
Interest expense consists of the following (in millions):
Three Months Ended June 30,
20262025
Debt issuance cost amortization$0.6 $0.7 
Debt discount amortization3.9 1.4 
Interest expense38.2 51.0 
Total interest expense on Senior Indebtedness42.7 53.1 
Debt issuance cost amortization1.7 0.7 
Coupon interest expense2.5 2.5 
Total interest expense on Convertible Debt4.2 3.2 
Other interest expense1.9 1.1 
Total interest expense $48.8 $57.4 

Commercial Paper

In September 2023, the Company established a Commercial Paper program under which the Company may issue short-term unsecured promissory notes with a maturity of up to 397 days from the date of issue. The Company's obligations with respect to the payment of the Commercial Paper are guaranteed by certain of its subsidiaries. The Commercial Paper will be sold at a discount from par or alternatively, will be sold at par and bear interest rates that will vary based on market conditions and the time of issuance. Pursuant to the Credit Agreement, the maximum principal amount outstanding at any time under the Commercial Paper program is $2.25 billion. The Company's intention is to reduce the amounts that would otherwise be available to borrow under the Company's Revolving Credit Facility by the outstanding amount of Commercial Paper. As of June 30, 2026, the Company had $211.0 million of Commercial Paper outstanding with a weighted-average interest rate of 4.04%.