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RETIREMENT PLANS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Total pension expenses	$ 29	$ 28	$ 27

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

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No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration