v3.26.1
RELATED PARTY TRANSACTIONS (Tables)
12 Months Ended
Dec. 31, 2025
RELATED PARTY TRANSACTIONS  
Schedule of key management personnel compensation

  ​ ​ ​

2025

  ​ ​ ​

2024

  ​ ​ ​

2023

Salaries and short-term benefits

$

2.3

$

1.9

$

2.0

Stock-based compensation

14.6

1.5

Termination and other long-term benefits

0.1

0.1

0.1

$

17.0

$

2.0

$

3.6

Schedule of transactions between related parties

Operating transactions

  ​ ​ ​

2025

  ​ ​ ​

2024

2023

Ultimate parent and parent corporation

 

 

Revenues

$

0.4

$

0.4

$

0.4

Purchase of goods and services

 

2.5

 

2.5

 

2.6

Operating expenses recovered

 

(2.2)

 

(1.4)

 

(1.8)

Corporations under common control

Revenues

 

3.6

 

3.3

 

4.1

Purchase of goods and services

 

126.6

 

119.3

 

147.5

Operating expenses recovered

 

(3.6)

 

(2.6)

 

0.2

Other affiliated corporations

Purchase of goods and services

51.2

52.2

30.5

Acquisition of property, plant and equipment and intangible assets

34.8

35.6

11.0

Accounts receivable from affiliated corporations

  ​ ​ ​

2025

  ​ ​ ​

2024

Ultimate parent and parent corporation

Accounts receivable

$

2.2

$

2.4

Dividends receivable

4.7

Interest receivable

 

14.9

 

14.6

Corporations under common control

 

 

Accounts receivable

 

12.0

 

11.8

$

29.1

$

33.5

Accounts payable to affiliated corporations

  ​ ​ ​

2025

  ​ ​ ​

2024

Ultimate parent and parent corporation

Accounts payable

$

17.6

$

42.0

Interest payable

4.7

Corporations under common control

 

 

Accounts payable

 

67.8

 

22.6

$

85.4

$

69.3

Schedule of tax consolidation transactions

  ​ ​ ​

2025

  ​ ​ ​

2024

Investment in an affiliated corporation

$

$

1,530.0

Subordinated loan from the parent corporation

 

 

(1,530.0)