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DEBT (Long-Term Debt) (Details) - USD ($) $ in Millions | Jun. 30, 2020 | May 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Total long-term debt | $ 4,575 |  | $ 4,770
Debt issuance costs | (30) |  | (26)
Less: Current portion of long-term debt | 555 |  | 804
Total long-term debt, net of current portion | 4,020 |  | 3,966
Other |  |  |
Debt Instrument [Line Items] |  |  |
Other | $ 32 |  | 34
Senior Notes | 4.75% Senior Notes due January 2020 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 4.75% |  |
Total long-term debt | $ 0 |  | 500
Senior Notes | 2.50% Senior Notes due March 2020 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 2.50% |  |
Total long-term debt | $ 0 |  | 300
Senior Notes | 4.70% Senior Notes due April 2021 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 4.70% |  |
Total long-term debt | $ 552 |  | 554
Senior Notes | 4.25% Senior Notes due April 2024 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 4.25% |  |
Total long-term debt | $ 318 |  | 308
Senior Notes | 3.50% Senior Notes due March 2025 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 3.50% |  |
Total long-term debt | $ 624 |  | 593
Senior Notes | 3.45% Senior Notes due June 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 3.45% |  |
Total long-term debt | $ 513 |  | 490
Senior Notes | 4.20% Senior Notes due June 2029 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 4.20% |  |
Total long-term debt | $ 499 |  | 499
Senior Notes | 2.95% Senior Notes due June 2030 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 2.95% |  |
Total long-term debt | $ 798 |  | 798
Senior Notes | 2.80% Senior Notes due June 2031 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 2.80% | 2.80% |
Total long-term debt | $ 549 |  | 0
Senior Notes | 6.95% Senior Notes due July 2037 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 6.95% |  |
Total long-term debt | $ 175 |  | 175
Senior Notes | 5.75% Senior Notes due January 2040 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 5.75% |  |
Total long-term debt | $ 245 |  | 245
Senior Notes | 4.70% Senior Notes due March 2045 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 4.70% |  |
Total long-term debt | $ 300 |  | $ 300

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