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Investments - Other Investments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Equity Method Investment, Aggregate Cost [Roll Forward] |  |  |  |
Opening undistributed value of investment | $ 5.0 | $ 8.9 | $ 12.1 | $ 8.9
Initial investment |  |  | 2.3 |
Goodwill | 0.0 | 0.0 | (1.8) | (22.1)
Distribution received |  |  | (9.3) | 0.0
Unrealized/realized gain/(loss) | (1.1) | (0.2) | 0.6 | (0.2)
Closing value of investment | 3.9 | 8.7 | 3.9 | 8.7
MVI |  |  |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |  |  |
Opening undistributed value of investment | 0.5 | 0.8 | 0.5 | 0.8
Initial investment |  |  | 0.0 |
Goodwill |  |  | 0.0 |
Distribution received |  |  | 0.0 |
Unrealized/realized gain/(loss) | (0.1) | (0.2) | (0.1) | (0.2)
Closing value of investment | 0.4 | 0.6 | 0.4 | 0.6
Chaspark |  |  |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |  |  |
Opening undistributed value of investment | 0.8 | 8.1 | 8.4 | 8.1
Initial investment |  |  | 0.0 |
Goodwill |  |  | 0.0 |
Distribution received |  |  | (9.3) |
Unrealized/realized gain/(loss) | (0.8) | 0.0 | 0.9 | 0.0
Closing value of investment | 0.0 | $ 8.1 | 0.0 | $ 8.1
Bene |  |  |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |  |  |
Opening undistributed value of investment | 3.2 |  | 3.2 |
Initial investment |  |  | 0.0 |
Goodwill |  |  | 0.0 |
Distribution received |  |  | 0.0 |
Unrealized/realized gain/(loss) | (0.2) |  | (0.2) |
Closing value of investment | 3.0 |  | 3.0 |
Digital Re |  |  |  |
Equity Method Investment, Aggregate Cost [Roll Forward] |  |  |  |
Opening undistributed value of investment | 0.5 |  | 0.0 |
Initial investment |  |  | 2.3 |
Goodwill |  |  | (1.8) |
Distribution received |  |  | 0.0 |
Unrealized/realized gain/(loss) | 0.0 |  | 0.0 |
Closing value of investment | $ 0.5 |  | $ 0.5 |

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- Definition This element represents the aggregate cost of investments accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition This item represents the amount of unrealized intercompany profits and losses on transactions between the Entity and unconsolidated subsidiaries (including certain corporate joint ventures, and noncontrolled corporations), accounted for under the equity method of accounting, which have not been eliminated in preparing the Entity's financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.3A-04) -URI http://asc.fasb.org/extlink&oid=27015204&loc=d3e355119-122828 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99375318&loc=d3e32367-111569 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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