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STOCKHOLDERS' EQUITY - Stock Repurchase Programs Narrative (Details) - USD ($) shares in Millions | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2020 | Nov. 30, 2018 | Feb. 28, 2018 | Nov. 30, 2016 | Jul. 31, 2012
Share-based Payment Arrangement [Abstract] |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  | $ 2,000,000,000.0
Stock repurchase program, additional authorized amount |  |  | $ 2,000,000,000.0 | $ 1,500,000,000 | $ 1,500,000,000 |
Remaining value available under stock repurchase programs |  | $ 897,000,000 |  |  |  |
Purchases of treasury stock (in shares) | 9.5 |  |  |  |  |

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