DERIVATIVE INSTRUMENTS AND HEDGING TRANSACTIONS 3 (Details) - Designated as Hedging Instrument [Member] - Long-term debt [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Summary Of Derivative Instruments By Hedge Designation [Line Items]
Carrying Amount of the Hedged Item	$ 4,144	$ 3,975
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Item	$ 194	$ 25

Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4EE
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109999712-113959

Name:	us-gaap_HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant