Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 210
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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Name:	us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

SUBSEQUENT EVENTS (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
SUBSEQUENT EVENTS (Details) - USD ($) $ in Millions	Jan. 02, 2020	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 02, 2019
Subsequent Event [Line Items]
Aggregate repurchase authorized					$ 1,000
Repurchase and retirement of common stock		$ 506	$ 479	$ 98
Repurchases settled			$ 479	$ 98
Subsequent Event [Member]
Subsequent Event [Line Items]
Repurchases settled	$ 27