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Affiliated Companies | 3 Months Ended
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Mar. 31, 2018
Equity Method Investments and Joint Ventures [Abstract] |
Affiliated Companies | Affiliated Companies At March 31, 2018 and December 31, 2017, the aggregate carrying amount of investments in equity-method affiliates was $76.5 million and $72.4 million, respectively, and the aggregate carrying amount of cost-method investments, for which fair value was not readily determinable, was $13.4 million at both period-ends. We test our cost-method investments for impairment whenever circumstances indicate that the carrying value of the investments may not be recoverable. Please refer to Note 5, Affiliated Companies, to the consolidated financial statements in our 2017 Annual Report for additional details.

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
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