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Fair Value of Financial Instruments (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
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Level 1 [Member] |  |
Fair Values of Financial Instruments [Abstract] |  |
Deferred compensation plans | $ 7.2 | $ 6.0

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- Definition Fair value portion of other assets. + References No definition available. + Details
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- Details
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