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Other income (Schedule of Other Income) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Disaggregation of Revenue [Line Items] |  |
Other income | $ 18.4 | $ 20.9
Ancillary Product Profit Sharing [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Other income | 9.1 | 8.7
Interest [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Other income | 4.8 | 8.4
Remarketing Fees [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Other income | 4.1 | 3.4
Other [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Other income | $ 0.4 | $ 0.4

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