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FINANCIAL INSTRUMENTS AND DERIVATIVES - BALANCE SHEET ALLOCATION (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges | $ 9 | $ 46
Gross liability amount recognized for derivative instruments designated as hedges | 35 | 14
Interest rate swaps |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges |  | 11
Cross currency basis swaps |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges |  | 7
Gross liability amount recognized for derivative instruments designated as hedges | 20 |
Prepaid Expenses and Other Current Assets |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges | 5 | 27
Gross asset amount recognized for derivative instruments not designated as hedges | 3 | 2
Prepaid Expenses and Other Current Assets | Foreign exchange forward contracts |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges | 5 | 27
Gross asset amount recognized for derivative instruments not designated as hedges | 3 | 2
Prepaid Expenses and Other Current Assets | Interest rate swaps |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges |  | 0
Prepaid Expenses and Other Current Assets | Cross currency basis swaps |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges | 0 | 0
Other Noncurrent Assets |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges | 2 | 18
Gross asset amount recognized for derivative instruments not designated as hedges | 0 | 0
Other Noncurrent Assets | Foreign exchange forward contracts |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges | 2 | 11
Gross asset amount recognized for derivative instruments not designated as hedges | 0 | 0
Other Noncurrent Assets | Interest rate swaps |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges |  | 0
Other Noncurrent Assets | Cross currency basis swaps |  |
Derivative [Line Items] |  |
Gross asset amount recognized for derivative instruments designated as hedges | 0 | 7
Accrued Liabilities |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges | 30 | 1
Gross liability amount recognized for derivative instruments not designated as hedges | 2 | 2
Accrued Liabilities | Foreign exchange forward contracts |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges | 10 | 1
Gross liability amount recognized for derivative instruments not designated as hedges | 2 | 2
Accrued Liabilities | Interest rate swaps |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges |  | 0
Accrued Liabilities | Cross currency basis swaps |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges | 20 | 0
Other Noncurrent Liabilities |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges | 3 | 13
Gross liability amount recognized for derivative instruments not designated as hedges | 0 | 0
Other Noncurrent Liabilities | Foreign exchange forward contracts |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges | 3 | 2
Gross liability amount recognized for derivative instruments not designated as hedges | 0 | 0
Other Noncurrent Liabilities | Interest rate swaps |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges |  | 11
Other Noncurrent Liabilities | Cross currency basis swaps |  |
Derivative [Line Items] |  |
Gross liability amount recognized for derivative instruments designated as hedges | $ 0 | $ 0

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