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Summary of Significant Accounting Policies (New Accounting Standards) (Expected Impact of Adoption of ASU 2016-02) (Details) - Accounting Standards Update 2016-02 [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle |
Operating Lease Right of Use Asset, Expected | $ 60
Operating Lease Liability, Expected | $ 65

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- Definition Operating Lease Liability, Expected + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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