Investments and Fair Value Measurements (Cost and Fair Value of Investments Classified by Maturity) (Details) - USD ($) $ in Millions |
Jun. 30, 2016 |
Dec. 31, 2015 |
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Available-for-sale Securities, Debt Maturities [Abstract] | ||
Available-for-sale securities, Equity securities, exchange-traded funds, and mutual funds, Cost | $ 27.5 | $ 18.7 |
Available-for-sale securities, Equity securities, exchange-traded funds, and mutual funds, Fair Value | 26.6 | 17.3 |
Available-for-sale securities, Cost | 27.5 | 18.7 |
Available-for-sale securities, Fair Value | 26.6 | 17.3 |
Held-to-maturity Securities, Debt Maturities [Abstract] | ||
Held-to-maturity securities, Due in one year or less, Cost | 14.0 | 15.3 |
Held-to-maturity securities, Due within one year or less, Fair Value | 14.0 | 15.3 |
Held-to-maturity securities, Due in one to three years, Cost | 1.8 | 0.0 |
Held-to-maturity securities, Due in one to three years, Fair Value | 1.8 | 0.0 |
Held-to-maturity securities, Cost | 15.8 | 15.3 |
Held-to-maturity securities, Fair Value | $ 15.8 | $ 15.3 |
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- Definition Available-for-sale Securities, Equity Securities And Mutual Funds, Amortized Cost Basis No definition available.
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- Definition Available-for-sale Securities, Equity Securities And Mutual Funds, Fair Value No definition available.
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- Definition Held-to-maturity Securities, Debt Maturities, After One Through Three Years, Fair Value No definition available.
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- Definition The amortized cost of held-to-maturity securities with maturity dates between one and three years. No definition available.
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. No definition available.
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- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Fair value of held-to-maturity debt securities maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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