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Investments - Other Investments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2018
Equity Method Investment, Aggregate Cost [Roll Forward] |  |
Opening undistributed value of investment | $ 66.1 | $ 66.4
Investment in the period | 1.2 | 1.2
Unrealized/realized gain/(loss) | (0.2) | (0.5)
Closing value of investment | 67.1 | 67.1
MVI |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |
Opening undistributed value of investment | 0.4 | 0.5
Investment in the period | 0.0 | 0.0
Unrealized/realized gain/(loss) | (0.1) | (0.2)
Closing value of investment | 0.3 | 0.3
Bene |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |
Opening undistributed value of investment | 2.7 | 2.9
Investment in the period | 1.2 | 1.2
Unrealized/realized gain/(loss) | (0.1) | (0.3)
Closing value of investment | 3.8 | 3.8
Digital Re |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |
Opening undistributed value of investment | 0.5 | 0.5
Investment in the period | 0.0 | 0.0
Unrealized/realized gain/(loss) | 0.0 | 0.0
Closing value of investment | 0.5 | 0.5
Crop Re |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |
Opening undistributed value of investment | 62.5 | 62.5
Investment in the period | 0.0 | 0.0
Unrealized/realized gain/(loss) | 0.0 | 0.0
Closing value of investment | $ 62.5 | $ 62.5

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