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FINANCIAL INSTRUMENTS - Cross-Currency Swap Contract (Details) € in Millions, ¥ in Millions, $ in Millions	Jun. 30, 2021 EUR (€)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 JPY (¥)	Dec. 31, 2020 EUR (€)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 JPY (¥)
US dollar
Derivative [Line Items]
Derivative, notional amount		$ 10			$ 10
Cross-currency swaps | US dollar | Maturity Period March 2025
Derivative [Line Items]
Derivative, notional amount		500			500
Cross-currency swaps | US dollar | Maturity Period July 2027
Derivative [Line Items]
Derivative, notional amount		1,100			1,100
Cross-currency swaps | US dollar | Maturity Period Feb 2023
Derivative [Line Items]
Derivative, notional amount		$ 100			$ 100
Cross-currency swaps | Euro | Maturity Period March 2025
Derivative [Line Items]
Derivative, notional amount | €	€ 450			€ 450
Cross-currency swaps | Euro | Maturity Period July 2027
Derivative [Line Items]
Derivative, notional amount | €	€ 976			€ 976
Cross-currency swaps | Japanese yen | Maturity Period Feb 2023
Derivative [Line Items]
Derivative, notional amount | ¥			¥ 10,798			¥ 10,978

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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