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STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jan. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock	$ 269,500,000	$ 0
Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Remaining amount of share repurchases authorized	1,700,000,000
Repurchase Program | Common Stock
Equity, Class of Treasury Stock [Line Items]
Amount of share repurchases authorized	$ 7,500,000,000
Stock repurchase program, increased to authorized amount			$ 2,000,000,000.0

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- Definition

Increased to authorized shares repurchase amount for Stock Repurchase Program

+ References

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- Definition

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- Definition

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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- Definition

Amount of stock repurchase plan authorized.

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- Definition

Amount remaining of a stock repurchase plan authorized.

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