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Capital risk management (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
CAPITAL RISK MANAGEMENT |  |  |
Equity | $ 955.9 | $ 789.3 |
Long-term debt | 491.0 | 489.2 |
Gross Capital | 1,446.9 | 1,278.5 |
Cash and cash equivalents | (481.5) | (186.3) | $ (83.4)
Total | $ 965.4 | $ 1,092.2 |

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