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Investments and loan receivable (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Investments and loan receivable |  |
Investments and loan receivable | $ 183.2 | $ 169.7
Unrealized gains losses on available-for-sale investments |  |
Gain (loss) on change in the fair value of equity investments at FVTOCI | 11.4 | (21.4)
Deferred tax (expense) recovery in other comprehensive income | (1.5) | 3.0
Gain (loss) on change in the fair value of equity investments at FVTOCI, net of tax | 9.9 | (18.4)
Equity investments |  |
Investments and loan receivable |  |
Investments and loan receivable | 145.6 | 136.7
Loan receivable |  |
Investments and loan receivable |  |
Investments and loan receivable | 3.0 | 0.7
Warrants |  |
Investments and loan receivable |  |
Investments and loan receivable | $ 34.6 | $ 32.3

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