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Unaudited Condensed Consolidated Financial Statements New Accounting Pronouncements or Changes in Accounting Principle (Details) - USD ($) | Jan. 01, 2019 | Jan. 01, 2018
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings |  | $ 800,000
Scenario, Forecast [Member] | Adjustments for New Accounting Pronouncement [Member] | Accounting Standards Update 2016-02 [Member] | Minimum [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 60,000,000 |
Scenario, Forecast [Member] | Adjustments for New Accounting Pronouncement [Member] | Accounting Standards Update 2016-02 [Member] | Maximum [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 80,000,000 |

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- Definition Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements. + References No definition available. + Details
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