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DEBT (Maturities of Long-Term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Debt Instruments [Abstract]
Remainder of 2020	$ 2
2021	553
2022	3
2023	1
2024	302
Thereafter	3,696
Total maturities of long-term debt	4,557
Unamortized discount	(11)
Debt issuance costs	(30)	$ (26)
Fair value basis adjustments attributable to hedged debt	59
Long-term debt	4,575	4,770
Current portion of long-term debt	555	804
Total long-term debt, net of current portion	$ 4,020	$ 3,966

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Debt Instrument, fair value basis adjustment attributable to hedged debt

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and before deducting unamortized discount or premiums, if any.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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