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DERIVATIVE AND NON-DERIVATIVE FINANCIAL INSTRUMENTS Part 1 (Details) - Designated as Hedging Instrument [Member] € in Millions, MMBTU in Millions, $ in Millions | 3 Months Ended | 12 Months Ended |  |  |  |  |
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Mar. 31, 2021 USD ($) MMBTU | Mar. 31, 2021 EUR (€) | Dec. 31, 2020 USD ($) MMBTU | Dec. 31, 2020 EUR (€) | Mar. 31, 2021 EUR (€) MMBTU | Dec. 31, 2020 EUR (€) MMBTU | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($)
Foreign Exchange Contract [Member] | Euro Member Countries, Euro | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  | € 483 | € 521 |  |  |
Energy Related Derivative [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | MMBTU | 9 |  | 17 |  | 9 | 17 |  |  |
Interest Rate Contract [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 75 |  | $ 75 |  |  |  |  |  |
Interest Rate Contract [Member] | Fair Value Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | 75 |  | 75 |  |  |  |  |  |
1.50% Notes Due 2023 and 1.875% Notes Due 2026 [Member] | Euro Member Countries, Euro | Net Investment Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional Amount of Nonderivative Instruments | $ 1,500 | € 1,245 | $ 1,500 | € 1,245 |  |  |  |  |
Expected Debt Issuance Aug 2020 [Member] | Interest Rate Contract [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  | $ 25 | $ 25 | $ 25
Notes Due January 2021, Notes Due August 2022, Notes Due January 2024, Notes Due March 2025, and Notes Due February 2027 [Member] | Cross Currency Interest Rate Contract [Member] | Euro Member Countries, Euro | Net Investment Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  | € 853 | € 853 |  |  |
4.5% Notes Due Dec 2028 [Member] | Cross Currency Interest Rate Contract [Member] | Euro Member Countries, Euro | Net Investment Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | 152 |  |
4.5% Notes Due Dec 2028 [Member] | Cross Currency Interest Rate Contract [Member] | United States of America, Dollars | Net Investment Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 180 |  |

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