Fair Value Measurement - Long term debt - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 1,444.5	$ 1,442.7
Long-term debt, fair value	1,406.6	1,367.3
Notes 2026 Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 399.7	$ 0.0