Debt and Credit Facilities - Interest Expense (Details) - Convertible Debt - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Total interest expense	$ 13.1	$ 15.1
Convertible senior notes due 2028
Debt Instrument [Line Items]
Contractual interest expense:	8.8	8.8
Amortization of debt issuance costs:	2.8	2.8
Convertible senior notes due 2025
Debt Instrument [Line Items]
Contractual interest expense:	1.2	2.8
Amortization of debt issuance costs:	$ 0.3	$ 0.7