New Accounting Pronouncements New Accounting Pronouncements (Details) - Accounting Standards Update 2016-02 [Member] - Estimated impact of adoption [Member] $ in Millions	Dec. 31, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Liability	$ 40
Operating Lease, Right-of-Use Asset	$ 40