Recent Accounting Pronouncements Revenue from Contracts with Customers ASU 2014-09 (Details) - USD ($) $ in Millions |
Jun. 30, 2019 |
Dec. 31, 2018 |
---|---|---|
Operating lease liabilities | $ 246 | $ 278 |
Accounting Standards Update 2016-02 [Member] | ||
Operating lease assets | 274 | |
Operating lease liabilities | $ 295 |