Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2025

Recurring Basis

Fair value measurements

Schedule of Assets and Liabilities Measured at Fair Value

 

Quoted prices in

 

Significant other

 

Significant

active markets for

observable

unobservable

identical assets

inputs

inputs

Aggregate

As at December 31, 2025

(Level 1)

(Level 2)

(Level 3)

fair value

Equity investments

$

1,093.3

$

—

$

12.0

$

1,105.3

Warrants

—

36.0

—

36.0

Receivables from provisional concentrate sales

—

6.6

—

6.6

$

1,093.3

$

42.6

$

12.0

$

1,147.9


		Quoted prices in			Significant other			Significant
		active markets for			observable			unobservable
		identical assets			inputs			inputs				Aggregate
As at December 31, 2024		(Level 1)			(Level 2)			(Level 3)				fair value
Equity investments		$	316.8		$	—		$	8.0			$	324.8
Warrants			—			0.7			—				0.7
Receivables from provisional concentrate sales			—			2.6			—				2.6
		$	316.8		$	3.3		$	8.0			$	328.1