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DEBT (Long-Term Debt) (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | May 31, 2016 | Mar. 31, 2016 | Mar. 31, 2015
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 3,784 | $ 3,734 |  |  |
Debt issuance costs | (20) | (24) |  |  |
Less: current portion of long-term debt | 36 | 6 |  |  |
Total long-term debt, net of current portion | 3,748 | 3,728 |  |  |
Secured Receivables Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 30 | 0 |  |  |
Interest rate at period end | 2.27% |  |  |  |
2.70% Senior Notes due April 2019 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 300 | 300 |  |  |
Debt instrument, interest rate | 2.70% |  |  |  |
Debt instrument, maturity date | Apr. 01, 2019 |  |  |  |
4.75% Senior Notes due January 2020 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 514 | 521 |  |  |
Debt instrument, interest rate | 4.75% |  |  |  |
Debt instrument, maturity date | Jan. 30, 2020 |  |  |  |
2.50% Senior Notes due March 2020 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 300 | 299 |  |  |
Debt instrument, interest rate | 2.50% |  |  |  | 2.50%
Debt instrument, maturity date | Mar. 30, 2020 |  |  |  |
4.70% Senior Notes due 2021 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 559 | 563 |  |  |
Debt instrument, interest rate | 4.70% |  |  |  |
Debt instrument, maturity date | Apr. 01, 2021 |  |  |  |
4.25% Senior Notes due April 2024 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 303 | 307 |  |  |
Debt instrument, interest rate | 4.25% |  |  |  |
Debt instrument, maturity date | Apr. 01, 2024 |  |  |  |
3.50% Senior Notes due March 2025 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 566 | 568 |  |  |
Debt instrument, interest rate | 3.50% |  |  |  | 3.50%
Debt instrument, maturity date | Mar. 30, 2025 |  |  |  |
3.45% Senior Notes due June 2026 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 470 | 469 |  |  |
Debt issuance costs |  |  | $ (4) |  |
Debt instrument, interest rate | 3.45% |  | 3.45% |  |
Debt instrument, maturity date | Jun. 30, 2026 |  |  |  |
6.95% Senior Notes Due 2037 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 174 | 174 |  |  |
Debt instrument, interest rate | 6.95% |  |  | 6.95% |
Debt instrument, maturity date | Jul. 01, 2037 |  |  |  |
5.75% Senior Notes Due 2040 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 244 | 244 |  |  |
Debt instrument, interest rate | 5.75% |  |  | 5.75% |
Debt instrument, maturity date | Jan. 30, 2040 |  |  |  |
4.70% Senior Notes due March 2045 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt | $ 300 | 300 |  |  |
Debt instrument, interest rate | 4.70% |  |  |  | 4.70%
Debt instrument, maturity date | Mar. 30, 2045 |  |  |  |
Other [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Other | $ 44 | $ 13 |  |  |

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