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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 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 + Details
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