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Other Investments | 12 Months Ended
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Dec. 31, 2017
Investments, All Other Investments [Abstract] |
Other Investments | Other Investments Other investments consist of investments in funds advised by Affiliates that are carried at fair value. The income or loss related to these investments is recorded in Investment and other income. See Note 11 for additional information on Other investments.

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- Definition The entire disclosure for investments, including all tables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 6 -Section 10 -Paragraph (c) -Subparagraph (1) + Details
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- References No definition available. + Details
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