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New Accounting Pronouncements New Accounting Pronouncements (Details) $ in Millions | Dec. 31, 2016 USD ($)
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Accounting Standards Update 2015-17 [Member] |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | $ 41.7

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