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NOTES PAYABLE AND LONG-TERM DEBT (Schedule of Annual Installments) (Details)
$ in Millions
Dec. 31, 2017
USD ($)
Annual Installments [Abstract]  
Long-term Debt, Maturities, Repayments of Principal 2018 $ 1
Long-term Debt, Maturities, Repayments of Principal 2019 1
Long-term Debt, Maturities, Repayments of Principal 2020 1
Long-term Debt, Maturities, Repayments of Principal 2021 1
Long-term Debt, Maturities, Repayments of Principal 2022 $ 1