Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Payables and Accruals [Abstract]
Accounts payable	$ 31.4	$ 24.4
Accrued liabilities
Research and development expenses	17.4	18.2
Employee expenses	4.5	17.5
Income taxes	5.0	4.8
General and administrative and commercial expenses	2.4	3.7
Professional fees	1.6	0.9
Total accounts payable and accrued liabilities	$ 62.3	$ 69.5