v3.26.1
LONG-TERM DEBT (Tables)
6 Months Ended
Jun. 30, 2026
LONG-TERM DEBT  
Schedule of long-term debt

June 30, 

December 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

(in millions)

2.5% Convertible Notes due 2028

$

136.7

$

575.0

0.0% Convertible Notes due 2031

1,150.0

Less: unamortized debt discount and issuance costs

(22.5)

(7.5)

Carrying amount, net

1,264.2

567.5

Less: current maturities

(135.6)

(567.5)

Net long-term debt

$

1,128.6

$

Schedule of interest expense

Three Months Ended June 30, 

Six Months Ended June 30, 

  ​ ​ ​

2026

  ​ ​ ​

2025

  ​ ​ ​

2026

  ​ ​ ​

2025

(in millions)

Interest expense

$

2.7

$

3.4

$

6.3

$

6.9

Amortization of debt issuance costs

0.9

0.8

1.7

1.5

Total interest expense related to debt

$

3.6

$

4.2

$

8.0

$

8.4