v3.19.3.a.u2

Commitments and contingencies - Guarantees and Contingencies (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2019
Contingencies |  |  |  |  |
Impairment |  | $ 5.8 |  | $ 101.1 |
Insurance receivable | $ 13.5 | 13.5 |  |  |
Insurance |  | 1.0 |  |  |
Capital expenditures |  | 7.3 | $ 1.8 | $ 5.5 |
Insurance proceeds |  | $ 11.3 |  |  |
Cadillac Project |  |  |  |  |
Contingencies |  |  |  |  |
Business interruption loss period |  | 45 days |  |  |
Business interruption expected revenue loss |  | $ 1.4 |  |  |
Impairment |  | 25.0 |  |  |
Write-down of capital spares | 0.6 | 0.3 |  |  |
Insurance receivable |  |  |  |  | $ 24.2
Insurance |  | 1.0 |  |  |
Capital expenditures |  | 5.1 |  |  |
Insurance Recoveries | 11.3 | 11.3 |  |  |
Insurance Settlements Receivable | 13.5 | $ 13.5 |  |  | $ 24.2
Gain on business interruption insurance recovery | $ 2.0 |  |  |  |

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