Investments - Additional Information (Detail) $ in Millions |
12 Months Ended | |
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Dec. 31, 2015
USD ($)
Investment
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Dec. 31, 2014
USD ($)
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Investments Debt And Equity Securities [Abstract] | ||
Number of investments in marketable equity securities | Investment | 2 | |
Fair value of marketable equity securities | $ 18.1 | $ 30.8 |
Marketable equity securities, unrealized gain (loss) | 12.7 | $ 18.3 |
Other- than- temporary impairment | $ 1.2 |
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- Definition Number of investments in marketable equity securities. No definition available.
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- References No definition available.
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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