Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

SHAREHOLDERS' EQUITY, COMMON STOCK REPURCHASE (Details) - USD ($) $ in Millions	3 Months Ended	67 Months Ended
	Mar. 31, 2020	Mar. 31, 2021	Aug. 31, 2015
Class of Stock [Line Items]
Stock Repurchased During Period, Value	$ 31
2015 1 Billion Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount			$ 1,000
Stock repurchased during period (shares)		7,600,000
Stock Repurchased During Period, Value		$ 544