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Goodwill and Other Intangibles, Net (Details - Future Amortization of Other Intangible, Net) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
2018 $ 40  
2019 39  
2020 37  
2021 35  
2022 33  
Thereafter 100  
Finite-Lived Intangible Assets, Net $ 284 $ 320