Accounting Policies - Capitalized Software Costs and Software Implementation Costs (Narrative) (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Property, Plant and Equipment [Line Items] | ||
| Capitalized software costs recognized during period | $ 13.3 | $ 33.2 |
| Capitalized software costs | $ 40.1 | $ 56.2 |
| Internally developed and purchased software | ||
| Property, Plant and Equipment [Line Items] | ||
| Useful life | 3 years | |