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INTANGIBLE ASSETS (Schedule of Future Amortization Expense of Intangible Assets) (Details)
$ in Millions
Dec. 31, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Estimated Amortization Expense, 2018 $ 6
Estimated Amortization Expense, 2019 6
Estimated Amortization Expense, 2020 6
Estimated Amortization Expense, 2021 4
Estimated Amortization Expense, 2022 $ 2