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Investments (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Investments |  |  |  |  |
Investments | $ 197.7 |  | $ 197.7 |  | $ 203.1
Unrealized gains losses on available-for-sale investments |  |  |  |  |
Change in the fair value of equity investments | 15.6 | $ 20.4 | (2.1) | $ 8.5 |
Deferred tax recovery (expense) in other comprehensive income | (2.0) | (2.7) | 0.4 | (1.1) |
Change in the fair value of equity investments, net of tax | 13.6 | $ 17.7 | (1.7) | $ 7.4 |
Equity investments |  |  |  |  |
Investments |  |  |  |  |
Investments | 165.2 |  | 165.2 |  | 172.2
Warrants |  |  |  |  |
Investments |  |  |  |  |
Investments | 0.8 |  | 0.8 |  | 0.8
Loan receivable |  |  |  |  |
Investments |  |  |  |  |
Investments | $ 31.7 |  | $ 31.7 |  | $ 30.1

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