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FAIR VALUE MEASUREMENT - FINANCIAL ASSETS AND LIABILITIES THAT ARE RECORDED AT FAIR VALUE AND CLASSIFIED BASED ON THE LOWEST LEVEL OF INPUT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	$ 10	$ 47
Liabilities	40	24
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9	9
Reported in Other expense (income), net	0	2
Payments	(4)	(2)
Effect of exchange rate changes	0	0
Ending balance	5	9
Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	10	40
Liabilities	15	4
Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	20	11
Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	5	9
Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets		7
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0	0
Liabilities	0	0
Level 1 | Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0	0
Liabilities	0	0
Level 1 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0	0
Level 1 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0	0
Level 1 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets		0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	10	47
Liabilities	35	15
Level 2 | Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	10	40
Liabilities	15	4
Level 2 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	20	11
Level 2 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0	0
Level 2 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets		7
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0	0
Liabilities	5	9
Level 3 | Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0	0
Liabilities	0	0
Level 3 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0	0
Level 3 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 5	9
Level 3 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets		$ 0

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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-Publisher FASB
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- Definition

Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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- Definition

Fair value of financial and nonfinancial obligations.

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Effect Of Foreign Currency Translation

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